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Finding the Fourth Proportional to 527,240.72, 790,858.20 and 127,880.72

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Solution

The fourth proportional to 527,240.72, 790,858.20 and 127,880.72 is: 191,820.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,240.72 : 790,858.20 = 127,880.72 : x
  2. Step 2: Convert to fraction form
    527,240.72/790,858.20 = 127,880.72/x
  3. Step 3: Cross multiply
    527,240.72x = 790,858.20 × 127,880.72
  4. Step 4: Simplify right side
    527,240.72x = 101,135,516,033.90
  5. Step 5: Solve for x
    x = 101,135,516,033.90/527,240.72
  6. Step 6: Final answer
    x = 191,820.38

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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.