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Finding the Fourth Proportional to 66,188.30, 91,340.45 and 35,973.69

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Solution

The fourth proportional to 66,188.30, 91,340.45 and 35,973.69 is: 49,644.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,188.30 : 91,340.45 = 35,973.69 : x
  2. Step 2: Convert to fraction form
    66,188.30/91,340.45 = 35,973.69/x
  3. Step 3: Cross multiply
    66,188.30x = 91,340.45 × 35,973.69
  4. Step 4: Simplify right side
    66,188.30x = 3,285,853,032.76
  5. Step 5: Solve for x
    x = 3,285,853,032.76/66,188.30
  6. Step 6: Final answer
    x = 49,644.02

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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.