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Finding the Fourth Proportional to 114,437.70, 171,656.55 and 72,447.30

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Solution

The fourth proportional to 114,437.70, 171,656.55 and 72,447.30 is: 108,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,437.70 : 171,656.55 = 72,447.30 : x
  2. Step 2: Convert to fraction form
    114,437.70/171,656.55 = 72,447.30/x
  3. Step 3: Cross multiply
    114,437.70x = 171,656.55 × 72,447.30
  4. Step 4: Simplify right side
    114,437.70x = 12,436,053,574.82
  5. Step 5: Solve for x
    x = 12,436,053,574.82/114,437.70
  6. Step 6: Final answer
    x = 108,670.95

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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.