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Finding the Fourth Proportional to 719,457.59, 992,853.62 and 392,771.11

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Solution

The fourth proportional to 719,457.59, 992,853.62 and 392,771.11 is: 542,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,457.59 : 992,853.62 = 392,771.11 : x
  2. Step 2: Convert to fraction form
    719,457.59/992,853.62 = 392,771.11/x
  3. Step 3: Cross multiply
    719,457.59x = 992,853.62 × 392,771.11
  4. Step 4: Simplify right side
    719,457.59x = 389,964,218,394.92
  5. Step 5: Solve for x
    x = 389,964,218,394.92/719,457.59
  6. Step 6: Final answer
    x = 542,025.30

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Double scale
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Similar ratio
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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.