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Finding the Fourth Proportional to 151,994.48, 209,748.49 and 84,006.72

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Solution

The fourth proportional to 151,994.48, 209,748.49 and 84,006.72 is: 115,927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,994.48 : 209,748.49 = 84,006.72 : x
  2. Step 2: Convert to fraction form
    151,994.48/209,748.49 = 84,006.72/x
  3. Step 3: Cross multiply
    151,994.48x = 209,748.49 × 84,006.72
  4. Step 4: Simplify right side
    151,994.48x = 17,620,282,459.84
  5. Step 5: Solve for x
    x = 17,620,282,459.84/151,994.48
  6. Step 6: Final answer
    x = 115,927.12

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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.