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Finding the Fourth Proportional to 418,397.17, 577,391.61 and 227,410.51

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Solution

The fourth proportional to 418,397.17, 577,391.61 and 227,410.51 is: 313,828.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,397.17 : 577,391.61 = 227,410.51 : x
  2. Step 2: Convert to fraction form
    418,397.17/577,391.61 = 227,410.51/x
  3. Step 3: Cross multiply
    418,397.17x = 577,391.61 × 227,410.51
  4. Step 4: Simplify right side
    418,397.17x = 131,304,920,499.82
  5. Step 5: Solve for x
    x = 131,304,920,499.82/418,397.17
  6. Step 6: Final answer
    x = 313,828.41

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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.