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Finding the Fourth Proportional to 208,994.95, 288,437.66 and 124,112.01

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Solution

The fourth proportional to 208,994.95, 288,437.66 and 124,112.01 is: 171,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,994.95 : 288,437.66 = 124,112.01 : x
  2. Step 2: Convert to fraction form
    208,994.95/288,437.66 = 124,112.01/x
  3. Step 3: Cross multiply
    208,994.95x = 288,437.66 × 124,112.01
  4. Step 4: Simplify right side
    208,994.95x = 35,798,578,668.80
  5. Step 5: Solve for x
    x = 35,798,578,668.80/208,994.95
  6. Step 6: Final answer
    x = 171,289.20

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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.