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Finding the Fourth Proportional to 114,011.56, 171,020.81 and 39,130.64

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Solution

The fourth proportional to 114,011.56, 171,020.81 and 39,130.64 is: 58,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,011.56 : 171,020.81 = 39,130.64 : x
  2. Step 2: Convert to fraction form
    114,011.56/171,020.81 = 39,130.64/x
  3. Step 3: Cross multiply
    114,011.56x = 171,020.81 × 39,130.64
  4. Step 4: Simplify right side
    114,011.56x = 6,692,152,991.34
  5. Step 5: Solve for x
    x = 6,692,152,991.34/114,011.56
  6. Step 6: Final answer
    x = 58,697.15

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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.