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Finding the Fourth Proportional to 98,761.66, 148,157.06 and 28,631.86

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Solution

The fourth proportional to 98,761.66, 148,157.06 and 28,631.86 is: 42,952.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,761.66 : 148,157.06 = 28,631.86 : x
  2. Step 2: Convert to fraction form
    98,761.66/148,157.06 = 28,631.86/x
  3. Step 3: Cross multiply
    98,761.66x = 148,157.06 × 28,631.86
  4. Step 4: Simplify right side
    98,761.66x = 4,242,012,199.93
  5. Step 5: Solve for x
    x = 4,242,012,199.93/98,761.66
  6. Step 6: Final answer
    x = 42,952.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.