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Finding the Fourth Proportional to 78,354, 108,128.52 and 44,820

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Solution

The fourth proportional to 78,354, 108,128.52 and 44,820 is: 61,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,354 : 108,128.52 = 44,820 : x
  2. Step 2: Convert to fraction form
    78,354/108,128.52 = 44,820/x
  3. Step 3: Cross multiply
    78,354x = 108,128.52 × 44,820
  4. Step 4: Simplify right side
    78,354x = 4,846,320,266.40
  5. Step 5: Solve for x
    x = 4,846,320,266.40/78,354
  6. Step 6: Final answer
    x = 61,851.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.