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Finding the Fourth Proportional to 48,506.40, 66,946.86 and 30,611.16

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Solution

The fourth proportional to 48,506.40, 66,946.86 and 30,611.16 is: 42,248.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,506.40 : 66,946.86 = 30,611.16 : x
  2. Step 2: Convert to fraction form
    48,506.40/66,946.86 = 30,611.16/x
  3. Step 3: Cross multiply
    48,506.40x = 66,946.86 × 30,611.16
  4. Step 4: Simplify right side
    48,506.40x = 2,049,321,042.96
  5. Step 5: Solve for x
    x = 2,049,321,042.96/48,506.40
  6. Step 6: Final answer
    x = 42,248.47

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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.