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Finding the Fourth Proportional to 580,712.23, 871,066.45 and 154,290.70

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Solution

The fourth proportional to 580,712.23, 871,066.45 and 154,290.70 is: 231,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,712.23 : 871,066.45 = 154,290.70 : x
  2. Step 2: Convert to fraction form
    580,712.23/871,066.45 = 154,290.70/x
  3. Step 3: Cross multiply
    580,712.23x = 871,066.45 × 154,290.70
  4. Step 4: Simplify right side
    580,712.23x = 134,397,452,317.02
  5. Step 5: Solve for x
    x = 134,397,452,317.02/580,712.23
  6. Step 6: Final answer
    x = 231,435.55

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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.