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Finding the Fourth Proportional to 527,219.42, 790,828.86 and 127,860.12

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Solution

The fourth proportional to 527,219.42, 790,828.86 and 127,860.12 is: 191,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,219.42 : 790,828.86 = 127,860.12 : x
  2. Step 2: Convert to fraction form
    527,219.42/790,828.86 = 127,860.12/x
  3. Step 3: Cross multiply
    527,219.42x = 790,828.86 × 127,860.12
  4. Step 4: Simplify right side
    527,219.42x = 101,115,472,939.06
  5. Step 5: Solve for x
    x = 101,115,472,939.06/527,219.42
  6. Step 6: Final answer
    x = 191,790.11

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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.