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Finding the Fourth Proportional to 658,164.80, 987,247.20 and 445,588.40

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Solution

The fourth proportional to 658,164.80, 987,247.20 and 445,588.40 is: 668,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,164.80 : 987,247.20 = 445,588.40 : x
  2. Step 2: Convert to fraction form
    658,164.80/987,247.20 = 445,588.40/x
  3. Step 3: Cross multiply
    658,164.80x = 987,247.20 × 445,588.40
  4. Step 4: Simplify right side
    658,164.80x = 439,905,900,252.48
  5. Step 5: Solve for x
    x = 439,905,900,252.48/658,164.80
  6. Step 6: Final answer
    x = 668,382.60

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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.