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Finding the Fourth Proportional to 359,436.73, 538,997.58 and 134,639.41

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Solution

The fourth proportional to 359,436.73, 538,997.58 and 134,639.41 is: 201,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,436.73 : 538,997.58 = 134,639.41 : x
  2. Step 2: Convert to fraction form
    359,436.73/538,997.58 = 134,639.41/x
  3. Step 3: Cross multiply
    359,436.73x = 538,997.58 × 134,639.41
  4. Step 4: Simplify right side
    359,436.73x = 72,570,316,162.63
  5. Step 5: Solve for x
    x = 72,570,316,162.63/359,436.73
  6. Step 6: Final answer
    x = 201,900.11

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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.