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Finding the Fourth Proportional to 532,145.40, 798,218.10 and 392,177.40

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Solution

The fourth proportional to 532,145.40, 798,218.10 and 392,177.40 is: 588,266.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,145.40 : 798,218.10 = 392,177.40 : x
  2. Step 2: Convert to fraction form
    532,145.40/798,218.10 = 392,177.40/x
  3. Step 3: Cross multiply
    532,145.40x = 798,218.10 × 392,177.40
  4. Step 4: Simplify right side
    532,145.40x = 313,043,099,090.94
  5. Step 5: Solve for x
    x = 313,043,099,090.94/532,145.40
  6. Step 6: Final answer
    x = 588,266.10

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.