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Finding the Fourth Proportional to 70,689.41, 97,551.49 and 38,858.50

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Solution

The fourth proportional to 70,689.41, 97,551.49 and 38,858.50 is: 53,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,689.41 : 97,551.49 = 38,858.50 : x
  2. Step 2: Convert to fraction form
    70,689.41/97,551.49 = 38,858.50/x
  3. Step 3: Cross multiply
    70,689.41x = 97,551.49 × 38,858.50
  4. Step 4: Simplify right side
    70,689.41x = 3,790,704,818.04
  5. Step 5: Solve for x
    x = 3,790,704,818.04/70,689.41
  6. Step 6: Final answer
    x = 53,624.79

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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.