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Finding the Fourth Proportional to 399,039.95, 598,570.26 and 114,719.02

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Solution

The fourth proportional to 399,039.95, 598,570.26 and 114,719.02 is: 172,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,039.95 : 598,570.26 = 114,719.02 : x
  2. Step 2: Convert to fraction form
    399,039.95/598,570.26 = 114,719.02/x
  3. Step 3: Cross multiply
    399,039.95x = 598,570.26 × 114,719.02
  4. Step 4: Simplify right side
    399,039.95x = 68,667,390,061.90
  5. Step 5: Solve for x
    x = 68,667,390,061.90/399,039.95
  6. Step 6: Final answer
    x = 172,081.49

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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.