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Finding the Fourth Proportional to 59,643.80, 89,235.30 and 38,907.80

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Solution

The fourth proportional to 59,643.80, 89,235.30 and 38,907.80 is: 58,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,643.80 : 89,235.30 = 38,907.80 : x
  2. Step 2: Convert to fraction form
    59,643.80/89,235.30 = 38,907.80/x
  3. Step 3: Cross multiply
    59,643.80x = 89,235.30 × 38,907.80
  4. Step 4: Simplify right side
    59,643.80x = 3,471,949,205.34
  5. Step 5: Solve for x
    x = 3,471,949,205.34/59,643.80
  6. Step 6: Final answer
    x = 58,211.40

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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.