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Finding the Fourth Proportional to 622,521.40, 933,782.10 and 498,105.40

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Solution

The fourth proportional to 622,521.40, 933,782.10 and 498,105.40 is: 747,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,521.40 : 933,782.10 = 498,105.40 : x
  2. Step 2: Convert to fraction form
    622,521.40/933,782.10 = 498,105.40/x
  3. Step 3: Cross multiply
    622,521.40x = 933,782.10 × 498,105.40
  4. Step 4: Simplify right side
    622,521.40x = 465,121,906,433.34
  5. Step 5: Solve for x
    x = 465,121,906,433.34/622,521.40
  6. Step 6: Final answer
    x = 747,158.10

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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.