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Finding the Fourth Proportional to 107,048.12, 147,720.12 and 58,640.46

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Solution

The fourth proportional to 107,048.12, 147,720.12 and 58,640.46 is: 80,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,048.12 : 147,720.12 = 58,640.46 : x
  2. Step 2: Convert to fraction form
    107,048.12/147,720.12 = 58,640.46/x
  3. Step 3: Cross multiply
    107,048.12x = 147,720.12 × 58,640.46
  4. Step 4: Simplify right side
    107,048.12x = 8,662,375,788.06
  5. Step 5: Solve for x
    x = 8,662,375,788.06/107,048.12
  6. Step 6: Final answer
    x = 80,920.39

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1.5x scale

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.