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Finding the Fourth Proportional to 72,655.40, 108,983.10 and 63,032.60

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Solution

The fourth proportional to 72,655.40, 108,983.10 and 63,032.60 is: 94,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,655.40 : 108,983.10 = 63,032.60 : x
  2. Step 2: Convert to fraction form
    72,655.40/108,983.10 = 63,032.60/x
  3. Step 3: Cross multiply
    72,655.40x = 108,983.10 × 63,032.60
  4. Step 4: Simplify right side
    72,655.40x = 6,869,488,149.06
  5. Step 5: Solve for x
    x = 6,869,488,149.06/72,655.40
  6. Step 6: Final answer
    x = 94,548.90

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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.