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Finding the Fourth Proportional to 112,521.61, 168,865.48 and 53,357.48

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Solution

The fourth proportional to 112,521.61, 168,865.48 and 53,357.48 is: 80,075.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,521.61 : 168,865.48 = 53,357.48 : x
  2. Step 2: Convert to fraction form
    112,521.61/168,865.48 = 53,357.48/x
  3. Step 3: Cross multiply
    112,521.61x = 168,865.48 × 53,357.48
  4. Step 4: Simplify right side
    112,521.61x = 9,010,235,627.46
  5. Step 5: Solve for x
    x = 9,010,235,627.46/112,521.61
  6. Step 6: Final answer
    x = 80,075.61

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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.