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Finding the Fourth Proportional to 70,915.33, 97,860.28 and 38,649.26

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Solution

The fourth proportional to 70,915.33, 97,860.28 and 38,649.26 is: 53,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.33 : 97,860.28 = 38,649.26 : x
  2. Step 2: Convert to fraction form
    70,915.33/97,860.28 = 38,649.26/x
  3. Step 3: Cross multiply
    70,915.33x = 97,860.28 × 38,649.26
  4. Step 4: Simplify right side
    70,915.33x = 3,782,227,579.12
  5. Step 5: Solve for x
    x = 3,782,227,579.12/70,915.33
  6. Step 6: Final answer
    x = 53,334.41

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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.