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Finding the Fourth Proportional to 70,383.90, 97,129.62 and 38,118.42

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Solution

The fourth proportional to 70,383.90, 97,129.62 and 38,118.42 is: 52,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,383.90 : 97,129.62 = 38,118.42 : x
  2. Step 2: Convert to fraction form
    70,383.90/97,129.62 = 38,118.42/x
  3. Step 3: Cross multiply
    70,383.90x = 97,129.62 × 38,118.42
  4. Step 4: Simplify right side
    70,383.90x = 3,702,427,649.60
  5. Step 5: Solve for x
    x = 3,702,427,649.60/70,383.90
  6. Step 6: Final answer
    x = 52,603.33

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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.