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Finding the Fourth Proportional to 117,915.62, 162,726.42 and 64,203.55

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Solution

The fourth proportional to 117,915.62, 162,726.42 and 64,203.55 is: 88,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,915.62 : 162,726.42 = 64,203.55 : x
  2. Step 2: Convert to fraction form
    117,915.62/162,726.42 = 64,203.55/x
  3. Step 3: Cross multiply
    117,915.62x = 162,726.42 × 64,203.55
  4. Step 4: Simplify right side
    117,915.62x = 10,447,613,676.74
  5. Step 5: Solve for x
    x = 10,447,613,676.74/117,915.62
  6. Step 6: Final answer
    x = 88,602.46

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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.