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Finding the Fourth Proportional to 132,989.68, 183,526.06 and 72,560.44

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Solution

The fourth proportional to 132,989.68, 183,526.06 and 72,560.44 is: 100,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,989.68 : 183,526.06 = 72,560.44 : x
  2. Step 2: Convert to fraction form
    132,989.68/183,526.06 = 72,560.44/x
  3. Step 3: Cross multiply
    132,989.68x = 183,526.06 × 72,560.44
  4. Step 4: Simplify right side
    132,989.68x = 13,316,731,665.07
  5. Step 5: Solve for x
    x = 13,316,731,665.07/132,989.68
  6. Step 6: Final answer
    x = 100,133.57

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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.