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Finding the Fourth Proportional to 107,706.75, 148,638.75 and 67,407.63

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Solution

The fourth proportional to 107,706.75, 148,638.75 and 67,407.63 is: 93,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,706.75 : 148,638.75 = 67,407.63 : x
  2. Step 2: Convert to fraction form
    107,706.75/148,638.75 = 67,407.63/x
  3. Step 3: Cross multiply
    107,706.75x = 148,638.75 × 67,407.63
  4. Step 4: Simplify right side
    107,706.75x = 10,019,385,863.66
  5. Step 5: Solve for x
    x = 10,019,385,863.66/107,706.75
  6. Step 6: Final answer
    x = 93,024.68

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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.