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Finding the Fourth Proportional to 418,279.38, 577,219.72 and 232,005.16

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Solution

The fourth proportional to 418,279.38, 577,219.72 and 232,005.16 is: 320,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,279.38 : 577,219.72 = 232,005.16 : x
  2. Step 2: Convert to fraction form
    418,279.38/577,219.72 = 232,005.16/x
  3. Step 3: Cross multiply
    418,279.38x = 577,219.72 × 232,005.16
  4. Step 4: Simplify right side
    418,279.38x = 133,917,953,493.76
  5. Step 5: Solve for x
    x = 133,917,953,493.76/418,279.38
  6. Step 6: Final answer
    x = 320,163.89

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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.