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Finding the Fourth Proportional to 112,259.61, 168,389.01 and 45,684.90

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Solution

The fourth proportional to 112,259.61, 168,389.01 and 45,684.90 is: 68,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,259.61 : 168,389.01 = 45,684.90 : x
  2. Step 2: Convert to fraction form
    112,259.61/168,389.01 = 45,684.90/x
  3. Step 3: Cross multiply
    112,259.61x = 168,389.01 × 45,684.90
  4. Step 4: Simplify right side
    112,259.61x = 7,692,835,082.95
  5. Step 5: Solve for x
    x = 7,692,835,082.95/112,259.61
  6. Step 6: Final answer
    x = 68,527.19

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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.