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Finding the Fourth Proportional to 527,145.67, 790,718.53 and 127,786.46

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Solution

The fourth proportional to 527,145.67, 790,718.53 and 127,786.46 is: 191,679.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,145.67 : 790,718.53 = 127,786.46 : x
  2. Step 2: Convert to fraction form
    527,145.67/790,718.53 = 127,786.46/x
  3. Step 3: Cross multiply
    527,145.67x = 790,718.53 × 127,786.46
  4. Step 4: Simplify right side
    527,145.67x = 101,043,122,578.84
  5. Step 5: Solve for x
    x = 101,043,122,578.84/527,145.67
  6. Step 6: Final answer
    x = 191,679.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.