Home / 186,787,415.10-279,803,209.05-129,344,547.90

Finding the Fourth Proportional to 186,787,415.10, 279,803,209.05 and 129,344,547.90

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Solution

The fourth proportional to 186,787,415.10, 279,803,209.05 and 129,344,547.90 is: 193,755,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,787,415.10 : 279,803,209.05 = 129,344,547.90 : x
  2. Step 2: Convert to fraction form
    186,787,415.10/279,803,209.05 = 129,344,547.90/x
  3. Step 3: Cross multiply
    186,787,415.10x = 279,803,209.05 × 129,344,547.90
  4. Step 4: Simplify right side
    186,787,415.10x = 36,191,019,575,541,440
  5. Step 5: Solve for x
    x = 36,191,019,575,541,440/186,787,415.10
  6. Step 6: Final answer
    x = 193,755,128.29

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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.