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Finding the Fourth Proportional to 49,999.60, 74,999.40 and 47,695.60

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Solution

The fourth proportional to 49,999.60, 74,999.40 and 47,695.60 is: 71,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,999.60 : 74,999.40 = 47,695.60 : x
  2. Step 2: Convert to fraction form
    49,999.60/74,999.40 = 47,695.60/x
  3. Step 3: Cross multiply
    49,999.60x = 74,999.40 × 47,695.60
  4. Step 4: Simplify right side
    49,999.60x = 3,577,141,382.64
  5. Step 5: Solve for x
    x = 3,577,141,382.64/49,999.60
  6. Step 6: Final answer
    x = 71,543.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.