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Finding the Fourth Proportional to 114,031.28, 157,363.38 and 63,730.28

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Solution

The fourth proportional to 114,031.28, 157,363.38 and 63,730.28 is: 87,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,031.28 : 157,363.38 = 63,730.28 : x
  2. Step 2: Convert to fraction form
    114,031.28/157,363.38 = 63,730.28/x
  3. Step 3: Cross multiply
    114,031.28x = 157,363.38 × 63,730.28
  4. Step 4: Simplify right side
    114,031.28x = 10,028,812,269.15
  5. Step 5: Solve for x
    x = 10,028,812,269.15/114,031.28
  6. Step 6: Final answer
    x = 87,947.91

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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.