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Finding the Fourth Proportional to 140,959.72, 194,526.12 and 77,299.12

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Solution

The fourth proportional to 140,959.72, 194,526.12 and 77,299.12 is: 106,673.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,959.72 : 194,526.12 = 77,299.12 : x
  2. Step 2: Convert to fraction form
    140,959.72/194,526.12 = 77,299.12/x
  3. Step 3: Cross multiply
    140,959.72x = 194,526.12 × 77,299.12
  4. Step 4: Simplify right side
    140,959.72x = 15,036,697,893.01
  5. Step 5: Solve for x
    x = 15,036,697,893.01/140,959.72
  6. Step 6: Final answer
    x = 106,673.72

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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.