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Finding the Fourth Proportional to 418,883.74, 578,053.20 and 227,892.76

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Solution

The fourth proportional to 418,883.74, 578,053.20 and 227,892.76 is: 314,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,883.74 : 578,053.20 = 227,892.76 : x
  2. Step 2: Convert to fraction form
    418,883.74/578,053.20 = 227,892.76/x
  3. Step 3: Cross multiply
    418,883.74x = 578,053.20 × 227,892.76
  4. Step 4: Simplify right side
    418,883.74x = 131,734,139,174.83
  5. Step 5: Solve for x
    x = 131,734,139,174.83/418,883.74
  6. Step 6: Final answer
    x = 314,488.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.