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Finding the Fourth Proportional to 99,383.40, 148,988.70 and 59,898.60

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Solution

The fourth proportional to 99,383.40, 148,988.70 and 59,898.60 is: 89,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,383.40 : 148,988.70 = 59,898.60 : x
  2. Step 2: Convert to fraction form
    99,383.40/148,988.70 = 59,898.60/x
  3. Step 3: Cross multiply
    99,383.40x = 148,988.70 × 59,898.60
  4. Step 4: Simplify right side
    99,383.40x = 8,924,214,545.82
  5. Step 5: Solve for x
    x = 8,924,214,545.82/99,383.40
  6. Step 6: Final answer
    x = 89,795.83

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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.