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Finding the Fourth Proportional to 66,346.56, 91,548.72 and 47,275.92

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Solution

The fourth proportional to 66,346.56, 91,548.72 and 47,275.92 is: 65,233.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,346.56 : 91,548.72 = 47,275.92 : x
  2. Step 2: Convert to fraction form
    66,346.56/91,548.72 = 47,275.92/x
  3. Step 3: Cross multiply
    66,346.56x = 91,548.72 × 47,275.92
  4. Step 4: Simplify right side
    66,346.56x = 4,328,049,962.82
  5. Step 5: Solve for x
    x = 4,328,049,962.82/66,346.56
  6. Step 6: Final answer
    x = 65,233.98

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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.