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Finding the Fourth Proportional to 58,258.80, 87,215.40 and 38,559.60

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Solution

The fourth proportional to 58,258.80, 87,215.40 and 38,559.60 is: 57,725.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,258.80 : 87,215.40 = 38,559.60 : x
  2. Step 2: Convert to fraction form
    58,258.80/87,215.40 = 38,559.60/x
  3. Step 3: Cross multiply
    58,258.80x = 87,215.40 × 38,559.60
  4. Step 4: Simplify right side
    58,258.80x = 3,362,990,937.84
  5. Step 5: Solve for x
    x = 3,362,990,937.84/58,258.80
  6. Step 6: Final answer
    x = 57,725.03

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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.