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Finding the Fourth Proportional to 164,776.80, 247,165.20 and 108,643.80

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Solution

The fourth proportional to 164,776.80, 247,165.20 and 108,643.80 is: 162,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,776.80 : 247,165.20 = 108,643.80 : x
  2. Step 2: Convert to fraction form
    164,776.80/247,165.20 = 108,643.80/x
  3. Step 3: Cross multiply
    164,776.80x = 247,165.20 × 108,643.80
  4. Step 4: Simplify right side
    164,776.80x = 26,852,966,555.76
  5. Step 5: Solve for x
    x = 26,852,966,555.76/164,776.80
  6. Step 6: Final answer
    x = 162,965.70

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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.