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Finding the Fourth Proportional to 63,264, 87,305.76 and 40,946.88

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Solution

The fourth proportional to 63,264, 87,305.76 and 40,946.88 is: 56,507.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,264 : 87,305.76 = 40,946.88 : x
  2. Step 2: Convert to fraction form
    63,264/87,305.76 = 40,946.88/x
  3. Step 3: Cross multiply
    63,264x = 87,305.76 × 40,946.88
  4. Step 4: Simplify right side
    63,264x = 3,574,898,478.03
  5. Step 5: Solve for x
    x = 3,574,898,478.03/63,264
  6. Step 6: Final answer
    x = 56,507.63

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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.