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Finding the Fourth Proportional to 99,168.66, 136,624.37 and 68,512.39

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Solution

The fourth proportional to 99,168.66, 136,624.37 and 68,512.39 is: 94,389.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,168.66 : 136,624.37 = 68,512.39 : x
  2. Step 2: Convert to fraction form
    99,168.66/136,624.37 = 68,512.39/x
  3. Step 3: Cross multiply
    99,168.66x = 136,624.37 × 68,512.39
  4. Step 4: Simplify right side
    99,168.66x = 9,360,461,701.49
  5. Step 5: Solve for x
    x = 9,360,461,701.49/99,168.66
  6. Step 6: Final answer
    x = 94,389.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.