Home / 28,318,492,646.36-39,079,523,678.32-15,631,230,706.48

Finding the Fourth Proportional to 28,318,492,646.36, 39,079,523,678.32 and 15,631,230,706.48

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Solution

The fourth proportional to 28,318,492,646.36, 39,079,523,678.32 and 15,631,230,706.48 is: 21,571,100,487.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318,492,646.36 : 39,079,523,678.32 = 15,631,230,706.48 : x
  2. Step 2: Convert to fraction form
    28,318,492,646.36/39,079,523,678.32 = 15,631,230,706.48/x
  3. Step 3: Cross multiply
    28,318,492,646.36x = 39,079,523,678.32 × 15,631,230,706.48
  4. Step 4: Simplify right side
    28,318,492,646.36x = 610,861,050,515,167,772,672
  5. Step 5: Solve for x
    x = 610,861,050,515,167,772,672/28,318,492,646.36
  6. Step 6: Final answer
    x = 21,571,100,487.01

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.