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Finding the Fourth Proportional to 88,697.60, 133,046.40 and 83,448.80

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Solution

The fourth proportional to 88,697.60, 133,046.40 and 83,448.80 is: 125,173.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,697.60 : 133,046.40 = 83,448.80 : x
  2. Step 2: Convert to fraction form
    88,697.60/133,046.40 = 83,448.80/x
  3. Step 3: Cross multiply
    88,697.60x = 133,046.40 × 83,448.80
  4. Step 4: Simplify right side
    88,697.60x = 11,102,562,424.32
  5. Step 5: Solve for x
    x = 11,102,562,424.32/88,697.60
  6. Step 6: Final answer
    x = 125,173.20

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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.