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Finding the Fourth Proportional to 108,818.93, 150,184.79 and 61,074.90

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Solution

The fourth proportional to 108,818.93, 150,184.79 and 61,074.90 is: 84,291.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,818.93 : 150,184.79 = 61,074.90 : x
  2. Step 2: Convert to fraction form
    108,818.93/150,184.79 = 61,074.90/x
  3. Step 3: Cross multiply
    108,818.93x = 150,184.79 × 61,074.90
  4. Step 4: Simplify right side
    108,818.93x = 9,172,521,030.77
  5. Step 5: Solve for x
    x = 9,172,521,030.77/108,818.93
  6. Step 6: Final answer
    x = 84,291.59

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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.