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Finding the Fourth Proportional to 58,912.40, 88,390.20 and 56,752.40

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Solution

The fourth proportional to 58,912.40, 88,390.20 and 56,752.40 is: 85,149.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,912.40 : 88,390.20 = 56,752.40 : x
  2. Step 2: Convert to fraction form
    58,912.40/88,390.20 = 56,752.40/x
  3. Step 3: Cross multiply
    58,912.40x = 88,390.20 × 56,752.40
  4. Step 4: Simplify right side
    58,912.40x = 5,016,355,986.48
  5. Step 5: Solve for x
    x = 5,016,355,986.48/58,912.40
  6. Step 6: Final answer
    x = 85,149.41

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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.