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Finding the Fourth Proportional to 63,270, 87,312.72 and 36,414.24

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Solution

The fourth proportional to 63,270, 87,312.72 and 36,414.24 is: 50,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,270 : 87,312.72 = 36,414.24 : x
  2. Step 2: Convert to fraction form
    63,270/87,312.72 = 36,414.24/x
  3. Step 3: Cross multiply
    63,270x = 87,312.72 × 36,414.24
  4. Step 4: Simplify right side
    63,270x = 3,179,426,341.13
  5. Step 5: Solve for x
    x = 3,179,426,341.13/63,270
  6. Step 6: Final answer
    x = 50,251.72

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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.