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Finding the Fourth Proportional to 133,032.60, 199,605.60 and 69,901.20

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Solution

The fourth proportional to 133,032.60, 199,605.60 and 69,901.20 is: 104,881.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,032.60 : 199,605.60 = 69,901.20 : x
  2. Step 2: Convert to fraction form
    133,032.60/199,605.60 = 69,901.20/x
  3. Step 3: Cross multiply
    133,032.60x = 199,605.60 × 69,901.20
  4. Step 4: Simplify right side
    133,032.60x = 13,952,670,966.72
  5. Step 5: Solve for x
    x = 13,952,670,966.72/133,032.60
  6. Step 6: Final answer
    x = 104,881.59

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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.