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Finding the Fourth Proportional to 140,700.88, 194,167.20 and 77,038.84

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Solution

The fourth proportional to 140,700.88, 194,167.20 and 77,038.84 is: 106,313.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,700.88 : 194,167.20 = 77,038.84 : x
  2. Step 2: Convert to fraction form
    140,700.88/194,167.20 = 77,038.84/x
  3. Step 3: Cross multiply
    140,700.88x = 194,167.20 × 77,038.84
  4. Step 4: Simplify right side
    140,700.88x = 14,958,415,854.05
  5. Step 5: Solve for x
    x = 14,958,415,854.05/140,700.88
  6. Step 6: Final answer
    x = 106,313.59

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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.