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Finding the Fourth Proportional to 584,579.60, 876,869.40 and 407,632.40

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Solution

The fourth proportional to 584,579.60, 876,869.40 and 407,632.40 is: 611,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,579.60 : 876,869.40 = 407,632.40 : x
  2. Step 2: Convert to fraction form
    584,579.60/876,869.40 = 407,632.40/x
  3. Step 3: Cross multiply
    584,579.60x = 876,869.40 × 407,632.40
  4. Step 4: Simplify right side
    584,579.60x = 357,440,378,008.56
  5. Step 5: Solve for x
    x = 357,440,378,008.56/584,579.60
  6. Step 6: Final answer
    x = 611,448.60

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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.