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Finding the Fourth Proportional to 58,417.60, 87,568.80 and 28,811.20

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Solution

The fourth proportional to 58,417.60, 87,568.80 and 28,811.20 is: 43,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,417.60 : 87,568.80 = 28,811.20 : x
  2. Step 2: Convert to fraction form
    58,417.60/87,568.80 = 28,811.20/x
  3. Step 3: Cross multiply
    58,417.60x = 87,568.80 × 28,811.20
  4. Step 4: Simplify right side
    58,417.60x = 2,522,962,210.56
  5. Step 5: Solve for x
    x = 2,522,962,210.56/58,417.60
  6. Step 6: Final answer
    x = 43,188.39

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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.