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Finding the Fourth Proportional to 118,331, 163,297.06 and 64,616.12

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Solution

The fourth proportional to 118,331, 163,297.06 and 64,616.12 is: 89,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,331 : 163,297.06 = 64,616.12 : x
  2. Step 2: Convert to fraction form
    118,331/163,297.06 = 64,616.12/x
  3. Step 3: Cross multiply
    118,331x = 163,297.06 × 64,616.12
  4. Step 4: Simplify right side
    118,331x = 10,551,622,424.61
  5. Step 5: Solve for x
    x = 10,551,622,424.61/118,331
  6. Step 6: Final answer
    x = 89,170.40

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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.