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Finding the Fourth Proportional to 124,589.76, 171,956.16 and 74,292

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Solution

The fourth proportional to 124,589.76, 171,956.16 and 74,292 is: 102,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,589.76 : 171,956.16 = 74,292 : x
  2. Step 2: Convert to fraction form
    124,589.76/171,956.16 = 74,292/x
  3. Step 3: Cross multiply
    124,589.76x = 171,956.16 × 74,292
  4. Step 4: Simplify right side
    124,589.76x = 12,774,967,038.72
  5. Step 5: Solve for x
    x = 12,774,967,038.72/124,589.76
  6. Step 6: Final answer
    x = 102,536.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.