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Finding the Fourth Proportional to 112,363.60, 168,739.80 and 59,875.60

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Solution

The fourth proportional to 112,363.60, 168,739.80 and 59,875.60 is: 89,916.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,363.60 : 168,739.80 = 59,875.60 : x
  2. Step 2: Convert to fraction form
    112,363.60/168,739.80 = 59,875.60/x
  3. Step 3: Cross multiply
    112,363.60x = 168,739.80 × 59,875.60
  4. Step 4: Simplify right side
    112,363.60x = 10,103,396,768.88
  5. Step 5: Solve for x
    x = 10,103,396,768.88/112,363.60
  6. Step 6: Final answer
    x = 89,916.99

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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.