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Finding the Fourth Proportional to 156,689.60, 235,064.32 and 51,538.88

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Solution

The fourth proportional to 156,689.60, 235,064.32 and 51,538.88 is: 77,318.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,689.60 : 235,064.32 = 51,538.88 : x
  2. Step 2: Convert to fraction form
    156,689.60/235,064.32 = 51,538.88/x
  3. Step 3: Cross multiply
    156,689.60x = 235,064.32 × 51,538.88
  4. Step 4: Simplify right side
    156,689.60x = 12,114,951,780.76
  5. Step 5: Solve for x
    x = 12,114,951,780.76/156,689.60
  6. Step 6: Final answer
    x = 77,318.16

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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.