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Finding the Fourth Proportional to 99,093.63, 148,663.15 and 42,943.17

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Solution

The fourth proportional to 99,093.63, 148,663.15 and 42,943.17 is: 64,424.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,093.63 : 148,663.15 = 42,943.17 : x
  2. Step 2: Convert to fraction form
    99,093.63/148,663.15 = 42,943.17/x
  3. Step 3: Cross multiply
    99,093.63x = 148,663.15 × 42,943.17
  4. Step 4: Simplify right side
    99,093.63x = 6,384,066,923.19
  5. Step 5: Solve for x
    x = 6,384,066,923.19/99,093.63
  6. Step 6: Final answer
    x = 64,424.59

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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.