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Finding the Fourth Proportional to 70,911.89, 97,862.92 and 39,083.75

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Solution

The fourth proportional to 70,911.89, 97,862.92 and 39,083.75 is: 53,938.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.89 : 97,862.92 = 39,083.75 : x
  2. Step 2: Convert to fraction form
    70,911.89/97,862.92 = 39,083.75/x
  3. Step 3: Cross multiply
    70,911.89x = 97,862.92 × 39,083.75
  4. Step 4: Simplify right side
    70,911.89x = 3,824,849,899.55
  5. Step 5: Solve for x
    x = 3,824,849,899.55/70,911.89
  6. Step 6: Final answer
    x = 53,938.06

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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.