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Finding the Fourth Proportional to 117,908.10, 176,862.15 and 105,005.70

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Solution

The fourth proportional to 117,908.10, 176,862.15 and 105,005.70 is: 157,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,908.10 : 176,862.15 = 105,005.70 : x
  2. Step 2: Convert to fraction form
    117,908.10/176,862.15 = 105,005.70/x
  3. Step 3: Cross multiply
    117,908.10x = 176,862.15 × 105,005.70
  4. Step 4: Simplify right side
    117,908.10x = 18,571,533,864.26
  5. Step 5: Solve for x
    x = 18,571,533,864.26/117,908.10
  6. Step 6: Final answer
    x = 157,508.55

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1.5x scale

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.