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Finding the Fourth Proportional to 623,449.80, 935,174.70 and 445,573.80

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Solution

The fourth proportional to 623,449.80, 935,174.70 and 445,573.80 is: 668,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,449.80 : 935,174.70 = 445,573.80 : x
  2. Step 2: Convert to fraction form
    623,449.80/935,174.70 = 445,573.80/x
  3. Step 3: Cross multiply
    623,449.80x = 935,174.70 × 445,573.80
  4. Step 4: Simplify right side
    623,449.80x = 416,689,344,742.86
  5. Step 5: Solve for x
    x = 416,689,344,742.86/623,449.80
  6. Step 6: Final answer
    x = 668,360.70

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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.