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Finding the Fourth Proportional to 158,899.94, 218,958.64 and 147,688.86

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Solution

The fourth proportional to 158,899.94, 218,958.64 and 147,688.86 is: 203,510.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,899.94 : 218,958.64 = 147,688.86 : x
  2. Step 2: Convert to fraction form
    158,899.94/218,958.64 = 147,688.86/x
  3. Step 3: Cross multiply
    158,899.94x = 218,958.64 × 147,688.86
  4. Step 4: Simplify right side
    158,899.94x = 32,337,751,928.75
  5. Step 5: Solve for x
    x = 32,337,751,928.75/158,899.94
  6. Step 6: Final answer
    x = 203,510.16

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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.