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Finding the Fourth Proportional to 72,179.84, 108,158.08 and 50,036.48

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Solution

The fourth proportional to 72,179.84, 108,158.08 and 50,036.48 is: 74,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.84 : 108,158.08 = 50,036.48 : x
  2. Step 2: Convert to fraction form
    72,179.84/108,158.08 = 50,036.48/x
  3. Step 3: Cross multiply
    72,179.84x = 108,158.08 × 50,036.48
  4. Step 4: Simplify right side
    72,179.84x = 5,411,849,606.76
  5. Step 5: Solve for x
    x = 5,411,849,606.76/72,179.84
  6. Step 6: Final answer
    x = 74,977.30

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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.