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Finding the Fourth Proportional to 719,094.84, 992,344.14 and 396,807.72

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Solution

The fourth proportional to 719,094.84, 992,344.14 and 396,807.72 is: 547,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,094.84 : 992,344.14 = 396,807.72 : x
  2. Step 2: Convert to fraction form
    719,094.84/992,344.14 = 396,807.72/x
  3. Step 3: Cross multiply
    719,094.84x = 992,344.14 × 396,807.72
  4. Step 4: Simplify right side
    719,094.84x = 393,769,815,648.76
  5. Step 5: Solve for x
    x = 393,769,815,648.76/719,094.84
  6. Step 6: Final answer
    x = 547,590.93

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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.