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Finding the Fourth Proportional to 635,454.39, 876,707.76 and 406,145.91

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Solution

The fourth proportional to 635,454.39, 876,707.76 and 406,145.91 is: 560,341.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,454.39 : 876,707.76 = 406,145.91 : x
  2. Step 2: Convert to fraction form
    635,454.39/876,707.76 = 406,145.91/x
  3. Step 3: Cross multiply
    635,454.39x = 876,707.76 × 406,145.91
  4. Step 4: Simplify right side
    635,454.39x = 356,071,270,989.26
  5. Step 5: Solve for x
    x = 356,071,270,989.26/635,454.39
  6. Step 6: Final answer
    x = 560,341.19

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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.