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Finding the Fourth Proportional to 70,928.97, 97,874.76 and 40,707.06

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Solution

The fourth proportional to 70,928.97, 97,874.76 and 40,707.06 is: 56,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928.97 : 97,874.76 = 40,707.06 : x
  2. Step 2: Convert to fraction form
    70,928.97/97,874.76 = 40,707.06/x
  3. Step 3: Cross multiply
    70,928.97x = 97,874.76 × 40,707.06
  4. Step 4: Simplify right side
    70,928.97x = 3,984,193,727.81
  5. Step 5: Solve for x
    x = 3,984,193,727.81/70,928.97
  6. Step 6: Final answer
    x = 56,171.60

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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.