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Finding the Fourth Proportional to 121,613.01, 167,813.23 and 70,615.80

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Solution

The fourth proportional to 121,613.01, 167,813.23 and 70,615.80 is: 97,442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,613.01 : 167,813.23 = 70,615.80 : x
  2. Step 2: Convert to fraction form
    121,613.01/167,813.23 = 70,615.80/x
  3. Step 3: Cross multiply
    121,613.01x = 167,813.23 × 70,615.80
  4. Step 4: Simplify right side
    121,613.01x = 11,850,265,133.96
  5. Step 5: Solve for x
    x = 11,850,265,133.96/121,613.01
  6. Step 6: Final answer
    x = 97,442.41

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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.