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Finding the Fourth Proportional to 582,545.80, 873,818.70 and 345,766.60

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Solution

The fourth proportional to 582,545.80, 873,818.70 and 345,766.60 is: 518,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,545.80 : 873,818.70 = 345,766.60 : x
  2. Step 2: Convert to fraction form
    582,545.80/873,818.70 = 345,766.60/x
  3. Step 3: Cross multiply
    582,545.80x = 873,818.70 × 345,766.60
  4. Step 4: Simplify right side
    582,545.80x = 302,137,320,915.42
  5. Step 5: Solve for x
    x = 302,137,320,915.42/582,545.80
  6. Step 6: Final answer
    x = 518,649.90

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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.