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Finding the Fourth Proportional to 70,435.60, 97,200.68 and 38,606.48

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Solution

The fourth proportional to 70,435.60, 97,200.68 and 38,606.48 is: 53,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,435.60 : 97,200.68 = 38,606.48 : x
  2. Step 2: Convert to fraction form
    70,435.60/97,200.68 = 38,606.48/x
  3. Step 3: Cross multiply
    70,435.60x = 97,200.68 × 38,606.48
  4. Step 4: Simplify right side
    70,435.60x = 3,752,576,108.41
  5. Step 5: Solve for x
    x = 3,752,576,108.41/70,435.60
  6. Step 6: Final answer
    x = 53,276.70

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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.