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Finding the Fourth Proportional to 124,561.40, 186,728.70 and 45,656.60

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Solution

The fourth proportional to 124,561.40, 186,728.70 and 45,656.60 is: 68,443.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,561.40 : 186,728.70 = 45,656.60 : x
  2. Step 2: Convert to fraction form
    124,561.40/186,728.70 = 45,656.60/x
  3. Step 3: Cross multiply
    124,561.40x = 186,728.70 × 45,656.60
  4. Step 4: Simplify right side
    124,561.40x = 8,525,397,564.42
  5. Step 5: Solve for x
    x = 8,525,397,564.42/124,561.40
  6. Step 6: Final answer
    x = 68,443.33

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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.