Home / 18,621,000.10-27,931,500.15-5,157,828.10

Finding the Fourth Proportional to 18,621,000.10, 27,931,500.15 and 5,157,828.10

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Solution

The fourth proportional to 18,621,000.10, 27,931,500.15 and 5,157,828.10 is: 7,736,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621,000.10 : 27,931,500.15 = 5,157,828.10 : x
  2. Step 2: Convert to fraction form
    18,621,000.10/27,931,500.15 = 5,157,828.10/x
  3. Step 3: Cross multiply
    18,621,000.10x = 27,931,500.15 × 5,157,828.10
  4. Step 4: Simplify right side
    18,621,000.10x = 144,065,876,348,824.19
  5. Step 5: Solve for x
    x = 144,065,876,348,824.19/18,621,000.10
  6. Step 6: Final answer
    x = 7,736,742.15

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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.