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Finding the Fourth Proportional to 614,110.60, 921,165.90 and 193,331.80

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Solution

The fourth proportional to 614,110.60, 921,165.90 and 193,331.80 is: 289,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,110.60 : 921,165.90 = 193,331.80 : x
  2. Step 2: Convert to fraction form
    614,110.60/921,165.90 = 193,331.80/x
  3. Step 3: Cross multiply
    614,110.60x = 921,165.90 × 193,331.80
  4. Step 4: Simplify right side
    614,110.60x = 178,090,661,545.62
  5. Step 5: Solve for x
    x = 178,090,661,545.62/614,110.60
  6. Step 6: Final answer
    x = 289,997.70

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1.5x scale

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.