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Finding the Fourth Proportional to 70,443.06, 97,210.80 and 38,611.86

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Solution

The fourth proportional to 70,443.06, 97,210.80 and 38,611.86 is: 53,284.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,443.06 : 97,210.80 = 38,611.86 : x
  2. Step 2: Convert to fraction form
    70,443.06/97,210.80 = 38,611.86/x
  3. Step 3: Cross multiply
    70,443.06x = 97,210.80 × 38,611.86
  4. Step 4: Simplify right side
    70,443.06x = 3,753,489,800.09
  5. Step 5: Solve for x
    x = 3,753,489,800.09/70,443.06
  6. Step 6: Final answer
    x = 53,284.03

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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.