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Finding the Fourth Proportional to 545,796.80, 818,695.20 and 457,223.30

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Solution

The fourth proportional to 545,796.80, 818,695.20 and 457,223.30 is: 685,834.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,796.80 : 818,695.20 = 457,223.30 : x
  2. Step 2: Convert to fraction form
    545,796.80/818,695.20 = 457,223.30/x
  3. Step 3: Cross multiply
    545,796.80x = 818,695.20 × 457,223.30
  4. Step 4: Simplify right side
    545,796.80x = 374,326,521,038.16
  5. Step 5: Solve for x
    x = 374,326,521,038.16/545,796.80
  6. Step 6: Final answer
    x = 685,834.95

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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.