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Finding the Fourth Proportional to 70,646.45, 97,496.87 and 38,815.74

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Solution

The fourth proportional to 70,646.45, 97,496.87 and 38,815.74 is: 53,568.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,646.45 : 97,496.87 = 38,815.74 : x
  2. Step 2: Convert to fraction form
    70,646.45/97,496.87 = 38,815.74/x
  3. Step 3: Cross multiply
    70,646.45x = 97,496.87 × 38,815.74
  4. Step 4: Simplify right side
    70,646.45x = 3,784,412,962.66
  5. Step 5: Solve for x
    x = 3,784,412,962.66/70,646.45
  6. Step 6: Final answer
    x = 53,568.34

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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.