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Finding the Fourth Proportional to 164,707.90, 247,455.51 and 105,658.90

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Solution

The fourth proportional to 164,707.90, 247,455.51 and 105,658.90 is: 158,740.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,707.90 : 247,455.51 = 105,658.90 : x
  2. Step 2: Convert to fraction form
    164,707.90/247,455.51 = 105,658.90/x
  3. Step 3: Cross multiply
    164,707.90x = 247,455.51 × 105,658.90
  4. Step 4: Simplify right side
    164,707.90x = 26,145,876,985.54
  5. Step 5: Solve for x
    x = 26,145,876,985.54/164,707.90
  6. Step 6: Final answer
    x = 158,740.88

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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.