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Finding the Fourth Proportional to 119,079.90, 164,332.14 and 65,369.82

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Solution

The fourth proportional to 119,079.90, 164,332.14 and 65,369.82 is: 90,211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,079.90 : 164,332.14 = 65,369.82 : x
  2. Step 2: Convert to fraction form
    119,079.90/164,332.14 = 65,369.82/x
  3. Step 3: Cross multiply
    119,079.90x = 164,332.14 × 65,369.82
  4. Step 4: Simplify right side
    119,079.90x = 10,742,362,412.01
  5. Step 5: Solve for x
    x = 10,742,362,412.01/119,079.90
  6. Step 6: Final answer
    x = 90,211.38

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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.