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Finding the Fourth Proportional to 188,484.76, 260,124.78 and 103,617.82

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Solution

The fourth proportional to 188,484.76, 260,124.78 and 103,617.82 is: 143,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,484.76 : 260,124.78 = 103,617.82 : x
  2. Step 2: Convert to fraction form
    188,484.76/260,124.78 = 103,617.82/x
  3. Step 3: Cross multiply
    188,484.76x = 260,124.78 × 103,617.82
  4. Step 4: Simplify right side
    188,484.76x = 26,953,562,631.58
  5. Step 5: Solve for x
    x = 26,953,562,631.58/188,484.76
  6. Step 6: Final answer
    x = 143,001.28

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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.