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Finding the Fourth Proportional to 63,312.32, 87,313.20 and 54,356.96

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Solution

The fourth proportional to 63,312.32, 87,313.20 and 54,356.96 is: 74,962.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,312.32 : 87,313.20 = 54,356.96 : x
  2. Step 2: Convert to fraction form
    63,312.32/87,313.20 = 54,356.96/x
  3. Step 3: Cross multiply
    63,312.32x = 87,313.20 × 54,356.96
  4. Step 4: Simplify right side
    63,312.32x = 4,746,080,119.87
  5. Step 5: Solve for x
    x = 4,746,080,119.87/63,312.32
  6. Step 6: Final answer
    x = 74,962.98

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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.