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Finding the Fourth Proportional to 119,321.84, 164,666.80 and 65,603.44

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Solution

The fourth proportional to 119,321.84, 164,666.80 and 65,603.44 is: 90,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,321.84 : 164,666.80 = 65,603.44 : x
  2. Step 2: Convert to fraction form
    119,321.84/164,666.80 = 65,603.44/x
  3. Step 3: Cross multiply
    119,321.84x = 164,666.80 × 65,603.44
  4. Step 4: Simplify right side
    119,321.84x = 10,802,708,533.79
  5. Step 5: Solve for x
    x = 10,802,708,533.79/119,321.84
  6. Step 6: Final answer
    x = 90,534.21

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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.