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Finding the Fourth Proportional to 170,868.72, 235,782.72 and 99,246.90

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Solution

The fourth proportional to 170,868.72, 235,782.72 and 99,246.90 is: 136,951.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,868.72 : 235,782.72 = 99,246.90 : x
  2. Step 2: Convert to fraction form
    170,868.72/235,782.72 = 99,246.90/x
  3. Step 3: Cross multiply
    170,868.72x = 235,782.72 × 99,246.90
  4. Step 4: Simplify right side
    170,868.72x = 23,400,704,033.57
  5. Step 5: Solve for x
    x = 23,400,704,033.57/170,868.72
  6. Step 6: Final answer
    x = 136,951.36

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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.