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Finding the Fourth Proportional to 113,685.92, 156,886.92 and 63,386.72

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Solution

The fourth proportional to 113,685.92, 156,886.92 and 63,386.72 is: 87,473.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,685.92 : 156,886.92 = 63,386.72 : x
  2. Step 2: Convert to fraction form
    113,685.92/156,886.92 = 63,386.72/x
  3. Step 3: Cross multiply
    113,685.92x = 156,886.92 × 63,386.72
  4. Step 4: Simplify right side
    113,685.92x = 9,944,547,269.70
  5. Step 5: Solve for x
    x = 9,944,547,269.70/113,685.92
  6. Step 6: Final answer
    x = 87,473.87

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1.5x scale

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.