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Finding the Fourth Proportional to 70,551.65, 97,361 and 38,286.40

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Solution

The fourth proportional to 70,551.65, 97,361 and 38,286.40 is: 52,835.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,551.65 : 97,361 = 38,286.40 : x
  2. Step 2: Convert to fraction form
    70,551.65/97,361 = 38,286.40/x
  3. Step 3: Cross multiply
    70,551.65x = 97,361 × 38,286.40
  4. Step 4: Simplify right side
    70,551.65x = 3,727,602,190.40
  5. Step 5: Solve for x
    x = 3,727,602,190.40/70,551.65
  6. Step 6: Final answer
    x = 52,835.08

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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.