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Finding the Fourth Proportional to 81,482.19, 112,443.28 and 45,674.52

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Solution

The fourth proportional to 81,482.19, 112,443.28 and 45,674.52 is: 63,029.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,482.19 : 112,443.28 = 45,674.52 : x
  2. Step 2: Convert to fraction form
    81,482.19/112,443.28 = 45,674.52/x
  3. Step 3: Cross multiply
    81,482.19x = 112,443.28 × 45,674.52
  4. Step 4: Simplify right side
    81,482.19x = 5,135,792,841.23
  5. Step 5: Solve for x
    x = 5,135,792,841.23/81,482.19
  6. Step 6: Final answer
    x = 63,029.64

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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.