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Finding the Fourth Proportional to 70,615.55, 97,425.75 and 39,984.46

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Solution

The fourth proportional to 70,615.55, 97,425.75 and 39,984.46 is: 55,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,615.55 : 97,425.75 = 39,984.46 : x
  2. Step 2: Convert to fraction form
    70,615.55/97,425.75 = 39,984.46/x
  3. Step 3: Cross multiply
    70,615.55x = 97,425.75 × 39,984.46
  4. Step 4: Simplify right side
    70,615.55x = 3,895,516,015.55
  5. Step 5: Solve for x
    x = 3,895,516,015.55/70,615.55
  6. Step 6: Final answer
    x = 55,165.13

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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.