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Finding the Fourth Proportional to 581,253.60, 871,880.40 and 511,269.60

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Solution

The fourth proportional to 581,253.60, 871,880.40 and 511,269.60 is: 766,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,253.60 : 871,880.40 = 511,269.60 : x
  2. Step 2: Convert to fraction form
    581,253.60/871,880.40 = 511,269.60/x
  3. Step 3: Cross multiply
    581,253.60x = 871,880.40 × 511,269.60
  4. Step 4: Simplify right side
    581,253.60x = 445,765,943,355.84
  5. Step 5: Solve for x
    x = 445,765,943,355.84/581,253.60
  6. Step 6: Final answer
    x = 766,904.40

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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.