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Finding the Fourth Proportional to 591,327.60, 886,772.70 and 191,981.40

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Solution

The fourth proportional to 591,327.60, 886,772.70 and 191,981.40 is: 287,901.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,327.60 : 886,772.70 = 191,981.40 : x
  2. Step 2: Convert to fraction form
    591,327.60/886,772.70 = 191,981.40/x
  3. Step 3: Cross multiply
    591,327.60x = 886,772.70 × 191,981.40
  4. Step 4: Simplify right side
    591,327.60x = 170,243,864,427.78
  5. Step 5: Solve for x
    x = 170,243,864,427.78/591,327.60
  6. Step 6: Final answer
    x = 287,901.10

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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.