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Finding the Fourth Proportional to 188,920.16, 260,675.52 and 113,469.92

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Solution

The fourth proportional to 188,920.16, 260,675.52 and 113,469.92 is: 156,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,920.16 : 260,675.52 = 113,469.92 : x
  2. Step 2: Convert to fraction form
    188,920.16/260,675.52 = 113,469.92/x
  3. Step 3: Cross multiply
    188,920.16x = 260,675.52 × 113,469.92
  4. Step 4: Simplify right side
    188,920.16x = 29,578,830,400.36
  5. Step 5: Solve for x
    x = 29,578,830,400.36/188,920.16
  6. Step 6: Final answer
    x = 156,567.89

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1.5x scale

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.