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Finding the Fourth Proportional to 164,911.40, 247,367.10 and 105,862.40

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Solution

The fourth proportional to 164,911.40, 247,367.10 and 105,862.40 is: 158,793.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,911.40 : 247,367.10 = 105,862.40 : x
  2. Step 2: Convert to fraction form
    164,911.40/247,367.10 = 105,862.40/x
  3. Step 3: Cross multiply
    164,911.40x = 247,367.10 × 105,862.40
  4. Step 4: Simplify right side
    164,911.40x = 26,186,874,887.04
  5. Step 5: Solve for x
    x = 26,186,874,887.04/164,911.40
  6. Step 6: Final answer
    x = 158,793.60

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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.