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Finding the Fourth Proportional to 141,161.88, 194,803.72 and 77,503.76

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Solution

The fourth proportional to 141,161.88, 194,803.72 and 77,503.76 is: 106,955.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,161.88 : 194,803.72 = 77,503.76 : x
  2. Step 2: Convert to fraction form
    141,161.88/194,803.72 = 77,503.76/x
  3. Step 3: Cross multiply
    141,161.88x = 194,803.72 × 77,503.76
  4. Step 4: Simplify right side
    141,161.88x = 15,098,020,761.99
  5. Step 5: Solve for x
    x = 15,098,020,761.99/141,161.88
  6. Step 6: Final answer
    x = 106,955.37

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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.