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Finding the Fourth Proportional to 719,336.47, 992,708.37 and 392,668.85

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Solution

The fourth proportional to 719,336.47, 992,708.37 and 392,668.85 is: 541,896.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,336.47 : 992,708.37 = 392,668.85 : x
  2. Step 2: Convert to fraction form
    719,336.47/992,708.37 = 392,668.85/x
  3. Step 3: Cross multiply
    719,336.47x = 992,708.37 × 392,668.85
  4. Step 4: Simplify right side
    719,336.47x = 389,805,654,033.28
  5. Step 5: Solve for x
    x = 389,805,654,033.28/719,336.47
  6. Step 6: Final answer
    x = 541,896.14

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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.