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Finding the Fourth Proportional to 156,689.40, 235,034.10 and 125,585.40

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Solution

The fourth proportional to 156,689.40, 235,034.10 and 125,585.40 is: 188,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,689.40 : 235,034.10 = 125,585.40 : x
  2. Step 2: Convert to fraction form
    156,689.40/235,034.10 = 125,585.40/x
  3. Step 3: Cross multiply
    156,689.40x = 235,034.10 × 125,585.40
  4. Step 4: Simplify right side
    156,689.40x = 29,516,851,462.14
  5. Step 5: Solve for x
    x = 29,516,851,462.14/156,689.40
  6. Step 6: Final answer
    x = 188,378.10

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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.