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Finding the Fourth Proportional to 58,748.80, 88,123.20 and 35,420.80

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Solution

The fourth proportional to 58,748.80, 88,123.20 and 35,420.80 is: 53,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,748.80 : 88,123.20 = 35,420.80 : x
  2. Step 2: Convert to fraction form
    58,748.80/88,123.20 = 35,420.80/x
  3. Step 3: Cross multiply
    58,748.80x = 88,123.20 × 35,420.80
  4. Step 4: Simplify right side
    58,748.80x = 3,121,394,242.56
  5. Step 5: Solve for x
    x = 3,121,394,242.56/58,748.80
  6. Step 6: Final answer
    x = 53,131.20

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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.