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Finding the Fourth Proportional to 719,345.88, 992,691.86 and 397,055.93

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Solution

The fourth proportional to 719,345.88, 992,691.86 and 397,055.93 is: 547,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,345.88 : 992,691.86 = 397,055.93 : x
  2. Step 2: Convert to fraction form
    719,345.88/992,691.86 = 397,055.93/x
  3. Step 3: Cross multiply
    719,345.88x = 992,691.86 × 397,055.93
  4. Step 4: Simplify right side
    719,345.88x = 394,154,182,726.99
  5. Step 5: Solve for x
    x = 394,154,182,726.99/719,345.88
  6. Step 6: Final answer
    x = 547,934.16

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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.