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Finding the Fourth Proportional to 519,232.60, 778,848.90 and 487,739.80

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Solution

The fourth proportional to 519,232.60, 778,848.90 and 487,739.80 is: 731,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,232.60 : 778,848.90 = 487,739.80 : x
  2. Step 2: Convert to fraction form
    519,232.60/778,848.90 = 487,739.80/x
  3. Step 3: Cross multiply
    519,232.60x = 778,848.90 × 487,739.80
  4. Step 4: Simplify right side
    519,232.60x = 379,875,606,716.22
  5. Step 5: Solve for x
    x = 379,875,606,716.22/519,232.60
  6. Step 6: Final answer
    x = 731,609.70

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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.