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Finding the Fourth Proportional to 115,487.01, 173,199.92 and 45,366.93

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Solution

The fourth proportional to 115,487.01, 173,199.92 and 45,366.93 is: 68,038.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,487.01 : 173,199.92 = 45,366.93 : x
  2. Step 2: Convert to fraction form
    115,487.01/173,199.92 = 45,366.93/x
  3. Step 3: Cross multiply
    115,487.01x = 173,199.92 × 45,366.93
  4. Step 4: Simplify right side
    115,487.01x = 7,857,548,419.81
  5. Step 5: Solve for x
    x = 7,857,548,419.81/115,487.01
  6. Step 6: Final answer
    x = 68,038.37

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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.