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Finding the Fourth Proportional to 107,193.45, 147,994.71 and 68,970.76

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Solution

The fourth proportional to 107,193.45, 147,994.71 and 68,970.76 is: 95,223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,193.45 : 147,994.71 = 68,970.76 : x
  2. Step 2: Convert to fraction form
    107,193.45/147,994.71 = 68,970.76/x
  3. Step 3: Cross multiply
    107,193.45x = 147,994.71 × 68,970.76
  4. Step 4: Simplify right side
    107,193.45x = 10,207,307,624.68
  5. Step 5: Solve for x
    x = 10,207,307,624.68/107,193.45
  6. Step 6: Final answer
    x = 95,223.24

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Double scale
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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.