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Finding the Fourth Proportional to 118,399, 177,686.16 and 56,069.68

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Solution

The fourth proportional to 118,399, 177,686.16 and 56,069.68 is: 84,146.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,399 : 177,686.16 = 56,069.68 : x
  2. Step 2: Convert to fraction form
    118,399/177,686.16 = 56,069.68/x
  3. Step 3: Cross multiply
    118,399x = 177,686.16 × 56,069.68
  4. Step 4: Simplify right side
    118,399x = 9,962,806,131.63
  5. Step 5: Solve for x
    x = 9,962,806,131.63/118,399
  6. Step 6: Final answer
    x = 84,146.03

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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.