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Finding the Fourth Proportional to 112,643.52, 168,899.62 and 49,461.12

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Solution

The fourth proportional to 112,643.52, 168,899.62 and 49,461.12 is: 74,162.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,643.52 : 168,899.62 = 49,461.12 : x
  2. Step 2: Convert to fraction form
    112,643.52/168,899.62 = 49,461.12/x
  3. Step 3: Cross multiply
    112,643.52x = 168,899.62 × 49,461.12
  4. Step 4: Simplify right side
    112,643.52x = 8,353,964,372.77
  5. Step 5: Solve for x
    x = 8,353,964,372.77/112,643.52
  6. Step 6: Final answer
    x = 74,162.85

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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.