Home / 66,512.16-99,784.80-19,763.76

Finding the Fourth Proportional to 66,512.16, 99,784.80 and 19,763.76

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Solution

The fourth proportional to 66,512.16, 99,784.80 and 19,763.76 is: 29,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,512.16 : 99,784.80 = 19,763.76 : x
  2. Step 2: Convert to fraction form
    66,512.16/99,784.80 = 19,763.76/x
  3. Step 3: Cross multiply
    66,512.16x = 99,784.80 × 19,763.76
  4. Step 4: Simplify right side
    66,512.16x = 1,972,122,838.85
  5. Step 5: Solve for x
    x = 1,972,122,838.85/66,512.16
  6. Step 6: Final answer
    x = 29,650.56

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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.