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Finding the Fourth Proportional to 434,083.60, 651,125.40 and 391,229.20

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Solution

The fourth proportional to 434,083.60, 651,125.40 and 391,229.20 is: 586,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,083.60 : 651,125.40 = 391,229.20 : x
  2. Step 2: Convert to fraction form
    434,083.60/651,125.40 = 391,229.20/x
  3. Step 3: Cross multiply
    434,083.60x = 651,125.40 × 391,229.20
  4. Step 4: Simplify right side
    434,083.60x = 254,739,269,341.68
  5. Step 5: Solve for x
    x = 254,739,269,341.68/434,083.60
  6. Step 6: Final answer
    x = 586,843.80

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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.