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Finding the Fourth Proportional to 545,862.10, 818,793.15 and 459,256.90

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Solution

The fourth proportional to 545,862.10, 818,793.15 and 459,256.90 is: 688,885.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,862.10 : 818,793.15 = 459,256.90 : x
  2. Step 2: Convert to fraction form
    545,862.10/818,793.15 = 459,256.90/x
  3. Step 3: Cross multiply
    545,862.10x = 818,793.15 × 459,256.90
  4. Step 4: Simplify right side
    545,862.10x = 376,036,403,810.24
  5. Step 5: Solve for x
    x = 376,036,403,810.24/545,862.10
  6. Step 6: Final answer
    x = 688,885.35

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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.