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Finding the Fourth Proportional to 585,550.81, 807,748.11 and 356,178.25

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Solution

The fourth proportional to 585,550.81, 807,748.11 and 356,178.25 is: 491,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,550.81 : 807,748.11 = 356,178.25 : x
  2. Step 2: Convert to fraction form
    585,550.81/807,748.11 = 356,178.25/x
  3. Step 3: Cross multiply
    585,550.81x = 807,748.11 × 356,178.25
  4. Step 4: Simplify right side
    585,550.81x = 287,702,308,260.61
  5. Step 5: Solve for x
    x = 287,702,308,260.61/585,550.81
  6. Step 6: Final answer
    x = 491,336.20

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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.