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Finding the Fourth Proportional to 659,416.80, 989,125.20 and 555,736.80

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Solution

The fourth proportional to 659,416.80, 989,125.20 and 555,736.80 is: 833,605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,416.80 : 989,125.20 = 555,736.80 : x
  2. Step 2: Convert to fraction form
    659,416.80/989,125.20 = 555,736.80/x
  3. Step 3: Cross multiply
    659,416.80x = 989,125.20 × 555,736.80
  4. Step 4: Simplify right side
    659,416.80x = 549,693,273,447.36
  5. Step 5: Solve for x
    x = 549,693,273,447.36/659,416.80
  6. Step 6: Final answer
    x = 833,605.20

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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.