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Finding the Fourth Proportional to 52,386.92, 78,581.08 and 14,947

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Solution

The fourth proportional to 52,386.92, 78,581.08 and 14,947 is: 22,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,386.92 : 78,581.08 = 14,947 : x
  2. Step 2: Convert to fraction form
    52,386.92/78,581.08 = 14,947/x
  3. Step 3: Cross multiply
    52,386.92x = 78,581.08 × 14,947
  4. Step 4: Simplify right side
    52,386.92x = 1,174,551,402.76
  5. Step 5: Solve for x
    x = 1,174,551,402.76/52,386.92
  6. Step 6: Final answer
    x = 22,420.70

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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.