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Finding the Fourth Proportional to 112,409.98, 168,531.59 and 68,026.18

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Solution

The fourth proportional to 112,409.98, 168,531.59 and 68,026.18 is: 101,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,409.98 : 168,531.59 = 68,026.18 : x
  2. Step 2: Convert to fraction form
    112,409.98/168,531.59 = 68,026.18/x
  3. Step 3: Cross multiply
    112,409.98x = 168,531.59 × 68,026.18
  4. Step 4: Simplify right side
    112,409.98x = 11,464,559,959.11
  5. Step 5: Solve for x
    x = 11,464,559,959.11/112,409.98
  6. Step 6: Final answer
    x = 101,988.81

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1.5x scale

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.