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Finding the Fourth Proportional to 129,076.80, 193,526.40 and 65,774.40

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Solution

The fourth proportional to 129,076.80, 193,526.40 and 65,774.40 is: 98,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,076.80 : 193,526.40 = 65,774.40 : x
  2. Step 2: Convert to fraction form
    129,076.80/193,526.40 = 65,774.40/x
  3. Step 3: Cross multiply
    129,076.80x = 193,526.40 × 65,774.40
  4. Step 4: Simplify right side
    129,076.80x = 12,729,082,844.16
  5. Step 5: Solve for x
    x = 12,729,082,844.16/129,076.80
  6. Step 6: Final answer
    x = 98,616.35

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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.