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Finding the Fourth Proportional to 70,281.68, 96,988.59 and 38,450.50

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Solution

The fourth proportional to 70,281.68, 96,988.59 and 38,450.50 is: 53,061.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.68 : 96,988.59 = 38,450.50 : x
  2. Step 2: Convert to fraction form
    70,281.68/96,988.59 = 38,450.50/x
  3. Step 3: Cross multiply
    70,281.68x = 96,988.59 × 38,450.50
  4. Step 4: Simplify right side
    70,281.68x = 3,729,259,537.32
  5. Step 5: Solve for x
    x = 3,729,259,537.32/70,281.68
  6. Step 6: Final answer
    x = 53,061.62

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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.