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Finding the Fourth Proportional to 58,857.60, 88,388.80 and 31,209.60

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Solution

The fourth proportional to 58,857.60, 88,388.80 and 31,209.60 is: 46,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,857.60 : 88,388.80 = 31,209.60 : x
  2. Step 2: Convert to fraction form
    58,857.60/88,388.80 = 31,209.60/x
  3. Step 3: Cross multiply
    58,857.60x = 88,388.80 × 31,209.60
  4. Step 4: Simplify right side
    58,857.60x = 2,758,579,092.48
  5. Step 5: Solve for x
    x = 2,758,579,092.48/58,857.60
  6. Step 6: Final answer
    x = 46,868.70

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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.