Home / 129,453,191.12-178,644,859.08-71,506,439.12

Finding the Fourth Proportional to 129,453,191.12, 178,644,859.08 and 71,506,439.12

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Solution

The fourth proportional to 129,453,191.12, 178,644,859.08 and 71,506,439.12 is: 98,678,585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,453,191.12 : 178,644,859.08 = 71,506,439.12 : x
  2. Step 2: Convert to fraction form
    129,453,191.12/178,644,859.08 = 71,506,439.12/x
  3. Step 3: Cross multiply
    129,453,191.12x = 178,644,859.08 × 71,506,439.12
  4. Step 4: Simplify right side
    129,453,191.12x = 12,774,257,739,905,000
  5. Step 5: Solve for x
    x = 12,774,257,739,905,000/129,453,191.12
  6. Step 6: Final answer
    x = 98,678,585.13

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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.