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Finding the Fourth Proportional to 111,686.84, 154,129.03 and 60,699.57

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Solution

The fourth proportional to 111,686.84, 154,129.03 and 60,699.57 is: 83,766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,686.84 : 154,129.03 = 60,699.57 : x
  2. Step 2: Convert to fraction form
    111,686.84/154,129.03 = 60,699.57/x
  3. Step 3: Cross multiply
    111,686.84x = 154,129.03 × 60,699.57
  4. Step 4: Simplify right side
    111,686.84x = 9,355,565,611.94
  5. Step 5: Solve for x
    x = 9,355,565,611.94/111,686.84
  6. Step 6: Final answer
    x = 83,766.05

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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.