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Finding the Fourth Proportional to 660,769.60, 991,192.08 and 187,417.76

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Solution

The fourth proportional to 660,769.60, 991,192.08 and 187,417.76 is: 281,137.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,769.60 : 991,192.08 = 187,417.76 : x
  2. Step 2: Convert to fraction form
    660,769.60/991,192.08 = 187,417.76/x
  3. Step 3: Cross multiply
    660,769.60x = 991,192.08 × 187,417.76
  4. Step 4: Simplify right side
    660,769.60x = 185,766,999,363.34
  5. Step 5: Solve for x
    x = 185,766,999,363.34/660,769.60
  6. Step 6: Final answer
    x = 281,137.33

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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.