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Finding the Fourth Proportional to 719,057.44, 992,302.82 and 396,767.76

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Solution

The fourth proportional to 719,057.44, 992,302.82 and 396,767.76 is: 547,541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,057.44 : 992,302.82 = 396,767.76 : x
  2. Step 2: Convert to fraction form
    719,057.44/992,302.82 = 396,767.76/x
  3. Step 3: Cross multiply
    719,057.44x = 992,302.82 × 396,767.76
  4. Step 4: Simplify right side
    719,057.44x = 393,713,767,133.08
  5. Step 5: Solve for x
    x = 393,713,767,133.08/719,057.44
  6. Step 6: Final answer
    x = 547,541.47

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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.