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Finding the Fourth Proportional to 113,560.71, 156,711.74 and 63,258.63

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Solution

The fourth proportional to 113,560.71, 156,711.74 and 63,258.63 is: 87,295.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,560.71 : 156,711.74 = 63,258.63 : x
  2. Step 2: Convert to fraction form
    113,560.71/156,711.74 = 63,258.63/x
  3. Step 3: Cross multiply
    113,560.71x = 156,711.74 × 63,258.63
  4. Step 4: Simplify right side
    113,560.71x = 9,913,369,351.90
  5. Step 5: Solve for x
    x = 9,913,369,351.90/113,560.71
  6. Step 6: Final answer
    x = 87,295.77

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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.