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Finding the Fourth Proportional to 78,471.94, 108,295.23 and 48,258.94

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Solution

The fourth proportional to 78,471.94, 108,295.23 and 48,258.94 is: 66,599.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,471.94 : 108,295.23 = 48,258.94 : x
  2. Step 2: Convert to fraction form
    78,471.94/108,295.23 = 48,258.94/x
  3. Step 3: Cross multiply
    78,471.94x = 108,295.23 × 48,258.94
  4. Step 4: Simplify right side
    78,471.94x = 5,226,213,006.86
  5. Step 5: Solve for x
    x = 5,226,213,006.86/78,471.94
  6. Step 6: Final answer
    x = 66,599.77

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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.