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Finding the Fourth Proportional to 539,248.40, 808,872.60 and 477,040.40

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Solution

The fourth proportional to 539,248.40, 808,872.60 and 477,040.40 is: 715,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,248.40 : 808,872.60 = 477,040.40 : x
  2. Step 2: Convert to fraction form
    539,248.40/808,872.60 = 477,040.40/x
  3. Step 3: Cross multiply
    539,248.40x = 808,872.60 × 477,040.40
  4. Step 4: Simplify right side
    539,248.40x = 385,864,908,653.04
  5. Step 5: Solve for x
    x = 385,864,908,653.04/539,248.40
  6. Step 6: Final answer
    x = 715,560.60

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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.