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Finding the Fourth Proportional to 719,053.79, 992,293.10 and 396,763.62

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Solution

The fourth proportional to 719,053.79, 992,293.10 and 396,763.62 is: 547,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,053.79 : 992,293.10 = 396,763.62 : x
  2. Step 2: Convert to fraction form
    719,053.79/992,293.10 = 396,763.62/x
  3. Step 3: Cross multiply
    719,053.79x = 992,293.10 × 396,763.62
  4. Step 4: Simplify right side
    719,053.79x = 393,705,800,473.20
  5. Step 5: Solve for x
    x = 393,705,800,473.20/719,053.79
  6. Step 6: Final answer
    x = 547,533.17

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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.