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Finding the Fourth Proportional to 66,808.64, 92,212.56 and 38,531.36

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Solution

The fourth proportional to 66,808.64, 92,212.56 and 38,531.36 is: 53,182.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,808.64 : 92,212.56 = 38,531.36 : x
  2. Step 2: Convert to fraction form
    66,808.64/92,212.56 = 38,531.36/x
  3. Step 3: Cross multiply
    66,808.64x = 92,212.56 × 38,531.36
  4. Step 4: Simplify right side
    66,808.64x = 3,553,075,345.88
  5. Step 5: Solve for x
    x = 3,553,075,345.88/66,808.64
  6. Step 6: Final answer
    x = 53,182.87

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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.