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Finding the Fourth Proportional to 584,561.40, 876,842.10 and 427,097.40

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Solution

The fourth proportional to 584,561.40, 876,842.10 and 427,097.40 is: 640,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,561.40 : 876,842.10 = 427,097.40 : x
  2. Step 2: Convert to fraction form
    584,561.40/876,842.10 = 427,097.40/x
  3. Step 3: Cross multiply
    584,561.40x = 876,842.10 × 427,097.40
  4. Step 4: Simplify right side
    584,561.40x = 374,496,981,120.54
  5. Step 5: Solve for x
    x = 374,496,981,120.54/584,561.40
  6. Step 6: Final answer
    x = 640,646.10

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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.