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Finding the Fourth Proportional to 141,157.87, 194,798.18 and 77,499.76

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Solution

The fourth proportional to 141,157.87, 194,798.18 and 77,499.76 is: 106,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,157.87 : 194,798.18 = 77,499.76 : x
  2. Step 2: Convert to fraction form
    141,157.87/194,798.18 = 77,499.76/x
  3. Step 3: Cross multiply
    141,157.87x = 194,798.18 × 77,499.76
  4. Step 4: Simplify right side
    141,157.87x = 15,096,811,810.94
  5. Step 5: Solve for x
    x = 15,096,811,810.94/141,157.87
  6. Step 6: Final answer
    x = 106,949.85

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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.