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Finding the Fourth Proportional to 261,955.99, 392,605.17 and 112,019.91

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Solution

The fourth proportional to 261,955.99, 392,605.17 and 112,019.91 is: 167,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,955.99 : 392,605.17 = 112,019.91 : x
  2. Step 2: Convert to fraction form
    261,955.99/392,605.17 = 112,019.91/x
  3. Step 3: Cross multiply
    261,955.99x = 392,605.17 × 112,019.91
  4. Step 4: Simplify right side
    261,955.99x = 43,979,595,808.93
  5. Step 5: Solve for x
    x = 43,979,595,808.93/261,955.99
  6. Step 6: Final answer
    x = 167,889.25

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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.