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Finding the Fourth Proportional to 70,928.92, 97,854.44 and 40,703.32

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Solution

The fourth proportional to 70,928.92, 97,854.44 and 40,703.32 is: 56,154.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928.92 : 97,854.44 = 40,703.32 : x
  2. Step 2: Convert to fraction form
    70,928.92/97,854.44 = 40,703.32/x
  3. Step 3: Cross multiply
    70,928.92x = 97,854.44 × 40,703.32
  4. Step 4: Simplify right side
    70,928.92x = 3,983,000,584.74
  5. Step 5: Solve for x
    x = 3,983,000,584.74/70,928.92
  6. Step 6: Final answer
    x = 56,154.82

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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.