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Finding the Fourth Proportional to 545,853.60, 818,780.40 and 459,248.40

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Solution

The fourth proportional to 545,853.60, 818,780.40 and 459,248.40 is: 688,872.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,853.60 : 818,780.40 = 459,248.40 : x
  2. Step 2: Convert to fraction form
    545,853.60/818,780.40 = 459,248.40/x
  3. Step 3: Cross multiply
    545,853.60x = 818,780.40 × 459,248.40
  4. Step 4: Simplify right side
    545,853.60x = 376,023,588,651.36
  5. Step 5: Solve for x
    x = 376,023,588,651.36/545,853.60
  6. Step 6: Final answer
    x = 688,872.60

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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.