Home / 85,391,998,868.90-128,062,210,128.82-25,684,811,109.50

Finding the Fourth Proportional to 85,391,998,868.90, 128,062,210,128.82 and 25,684,811,109.50

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Solution

The fourth proportional to 85,391,998,868.90, 128,062,210,128.82 and 25,684,811,109.50 is: 38,519,459,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,391,998,868.90 : 128,062,210,128.82 = 25,684,811,109.50 : x
  2. Step 2: Convert to fraction form
    85,391,998,868.90/128,062,210,128.82 = 25,684,811,109.50/x
  3. Step 3: Cross multiply
    85,391,998,868.90x = 128,062,210,128.82 × 25,684,811,109.50
  4. Step 4: Simplify right side
    85,391,998,868.90x = 3,289,253,677,423,839,412,224
  5. Step 5: Solve for x
    x = 3,289,253,677,423,839,412,224/85,391,998,868.90
  6. Step 6: Final answer
    x = 38,519,459,914.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.