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Finding the Fourth Proportional to 312,715.17, 469,072.76 and 76,058.01

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Solution

The fourth proportional to 312,715.17, 469,072.76 and 76,058.01 is: 114,087.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,715.17 : 469,072.76 = 76,058.01 : x
  2. Step 2: Convert to fraction form
    312,715.17/469,072.76 = 76,058.01/x
  3. Step 3: Cross multiply
    312,715.17x = 469,072.76 × 76,058.01
  4. Step 4: Simplify right side
    312,715.17x = 35,676,740,290.52
  5. Step 5: Solve for x
    x = 35,676,740,290.52/312,715.17
  6. Step 6: Final answer
    x = 114,087.02

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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.