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Finding the Fourth Proportional to 545,794.60, 818,691.90 and 411,950.20

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Solution

The fourth proportional to 545,794.60, 818,691.90 and 411,950.20 is: 617,925.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,794.60 : 818,691.90 = 411,950.20 : x
  2. Step 2: Convert to fraction form
    545,794.60/818,691.90 = 411,950.20/x
  3. Step 3: Cross multiply
    545,794.60x = 818,691.90 × 411,950.20
  4. Step 4: Simplify right side
    545,794.60x = 337,260,291,943.38
  5. Step 5: Solve for x
    x = 337,260,291,943.38/545,794.60
  6. Step 6: Final answer
    x = 617,925.30

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Half scale
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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.