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Finding the Fourth Proportional to 545,687.10, 818,530.65 and 459,081.90

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Solution

The fourth proportional to 545,687.10, 818,530.65 and 459,081.90 is: 688,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,687.10 : 818,530.65 = 459,081.90 : x
  2. Step 2: Convert to fraction form
    545,687.10/818,530.65 = 459,081.90/x
  3. Step 3: Cross multiply
    545,687.10x = 818,530.65 × 459,081.90
  4. Step 4: Simplify right side
    545,687.10x = 375,772,606,010.24
  5. Step 5: Solve for x
    x = 375,772,606,010.24/545,687.10
  6. Step 6: Final answer
    x = 688,622.85

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Similar ratio
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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.