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Finding the Fourth Proportional to 188,807.18, 260,421.23 and 124,255.85

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Solution

The fourth proportional to 188,807.18, 260,421.23 and 124,255.85 is: 171,385.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,807.18 : 260,421.23 = 124,255.85 : x
  2. Step 2: Convert to fraction form
    188,807.18/260,421.23 = 124,255.85/x
  3. Step 3: Cross multiply
    188,807.18x = 260,421.23 × 124,255.85
  4. Step 4: Simplify right side
    188,807.18x = 32,358,860,670.42
  5. Step 5: Solve for x
    x = 32,358,860,670.42/188,807.18
  6. Step 6: Final answer
    x = 171,385.75

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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.