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Finding the Fourth Proportional to 112,551.60, 168,827.40 and 70,561.20

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Solution

The fourth proportional to 112,551.60, 168,827.40 and 70,561.20 is: 105,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,551.60 : 168,827.40 = 70,561.20 : x
  2. Step 2: Convert to fraction form
    112,551.60/168,827.40 = 70,561.20/x
  3. Step 3: Cross multiply
    112,551.60x = 168,827.40 × 70,561.20
  4. Step 4: Simplify right side
    112,551.60x = 11,912,663,936.88
  5. Step 5: Solve for x
    x = 11,912,663,936.88/112,551.60
  6. Step 6: Final answer
    x = 105,841.80

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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.