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Finding the Fourth Proportional to 719,254.05, 992,572.66 and 392,570.05

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Solution

The fourth proportional to 719,254.05, 992,572.66 and 392,570.05 is: 541,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,254.05 : 992,572.66 = 392,570.05 : x
  2. Step 2: Convert to fraction form
    719,254.05/992,572.66 = 392,570.05/x
  3. Step 3: Cross multiply
    719,254.05x = 992,572.66 × 392,570.05
  4. Step 4: Simplify right side
    719,254.05x = 389,654,298,764.83
  5. Step 5: Solve for x
    x = 389,654,298,764.83/719,254.05
  6. Step 6: Final answer
    x = 541,747.80

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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.