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Finding the Fourth Proportional to 381,873.60, 572,810.40 and 293,572.80

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Solution

The fourth proportional to 381,873.60, 572,810.40 and 293,572.80 is: 440,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,873.60 : 572,810.40 = 293,572.80 : x
  2. Step 2: Convert to fraction form
    381,873.60/572,810.40 = 293,572.80/x
  3. Step 3: Cross multiply
    381,873.60x = 572,810.40 × 293,572.80
  4. Step 4: Simplify right side
    381,873.60x = 168,161,552,997.12
  5. Step 5: Solve for x
    x = 168,161,552,997.12/381,873.60
  6. Step 6: Final answer
    x = 440,359.20

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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.