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Finding the Fourth Proportional to 719,359.93, 992,716.75 and 397,070.11

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Solution

The fourth proportional to 719,359.93, 992,716.75 and 397,070.11 is: 547,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,359.93 : 992,716.75 = 397,070.11 : x
  2. Step 2: Convert to fraction form
    719,359.93/992,716.75 = 397,070.11/x
  3. Step 3: Cross multiply
    719,359.93x = 992,716.75 × 397,070.11
  4. Step 4: Simplify right side
    719,359.93x = 394,178,149,121.34
  5. Step 5: Solve for x
    x = 394,178,149,121.34/719,359.93
  6. Step 6: Final answer
    x = 547,956.78

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Double scale
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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.