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Finding the Fourth Proportional to 71,798.76, 99,114.66 and 51,396.84

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Solution

The fourth proportional to 71,798.76, 99,114.66 and 51,396.84 is: 70,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,798.76 : 99,114.66 = 51,396.84 : x
  2. Step 2: Convert to fraction form
    71,798.76/99,114.66 = 51,396.84/x
  3. Step 3: Cross multiply
    71,798.76x = 99,114.66 × 51,396.84
  4. Step 4: Simplify right side
    71,798.76x = 5,094,180,321.67
  5. Step 5: Solve for x
    x = 5,094,180,321.67/71,798.76
  6. Step 6: Final answer
    x = 70,950.81

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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.