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Finding the Fourth Proportional to 132,798.55, 183,259.54 and 72,369.61

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Solution

The fourth proportional to 132,798.55, 183,259.54 and 72,369.61 is: 99,868.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,798.55 : 183,259.54 = 72,369.61 : x
  2. Step 2: Convert to fraction form
    132,798.55/183,259.54 = 72,369.61/x
  3. Step 3: Cross multiply
    132,798.55x = 183,259.54 × 72,369.61
  4. Step 4: Simplify right side
    132,798.55x = 13,262,421,257.66
  5. Step 5: Solve for x
    x = 13,262,421,257.66/132,798.55
  6. Step 6: Final answer
    x = 99,868.72

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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.