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Finding the Fourth Proportional to 92,417.70, 138,530.07 and 67,055.94

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Solution

The fourth proportional to 92,417.70, 138,530.07 and 67,055.94 is: 100,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,417.70 : 138,530.07 = 67,055.94 : x
  2. Step 2: Convert to fraction form
    92,417.70/138,530.07 = 67,055.94/x
  3. Step 3: Cross multiply
    92,417.70x = 138,530.07 × 67,055.94
  4. Step 4: Simplify right side
    92,417.70x = 9,289,264,062.12
  5. Step 5: Solve for x
    x = 9,289,264,062.12/92,417.70
  6. Step 6: Final answer
    x = 100,513.91

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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.