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Finding the Fourth Proportional to 78,457.44, 108,275.22 and 48,244.44

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Solution

The fourth proportional to 78,457.44, 108,275.22 and 48,244.44 is: 66,579.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.44 : 108,275.22 = 48,244.44 : x
  2. Step 2: Convert to fraction form
    78,457.44/108,275.22 = 48,244.44/x
  3. Step 3: Cross multiply
    78,457.44x = 108,275.22 × 48,244.44
  4. Step 4: Simplify right side
    78,457.44x = 5,223,677,354.78
  5. Step 5: Solve for x
    x = 5,223,677,354.78/78,457.44
  6. Step 6: Final answer
    x = 66,579.76

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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.