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Finding the Fourth Proportional to 63,125.60, 94,688.40 and 31,956.80

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Solution

The fourth proportional to 63,125.60, 94,688.40 and 31,956.80 is: 47,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,125.60 : 94,688.40 = 31,956.80 : x
  2. Step 2: Convert to fraction form
    63,125.60/94,688.40 = 31,956.80/x
  3. Step 3: Cross multiply
    63,125.60x = 94,688.40 × 31,956.80
  4. Step 4: Simplify right side
    63,125.60x = 3,025,938,261.12
  5. Step 5: Solve for x
    x = 3,025,938,261.12/63,125.60
  6. Step 6: Final answer
    x = 47,935.20

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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.