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Finding the Fourth Proportional to 61,890.70, 85,385.24 and 35,027.05

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Solution

The fourth proportional to 61,890.70, 85,385.24 and 35,027.05 is: 48,323.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.70 : 85,385.24 = 35,027.05 : x
  2. Step 2: Convert to fraction form
    61,890.70/85,385.24 = 35,027.05/x
  3. Step 3: Cross multiply
    61,890.70x = 85,385.24 × 35,027.05
  4. Step 4: Simplify right side
    61,890.70x = 2,990,792,643.82
  5. Step 5: Solve for x
    x = 2,990,792,643.82/61,890.70
  6. Step 6: Final answer
    x = 48,323.79

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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.