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Finding the Fourth Proportional to 359,089.02, 538,647.15 and 134,425.80

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Solution

The fourth proportional to 359,089.02, 538,647.15 and 134,425.80 is: 201,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,089.02 : 538,647.15 = 134,425.80 : x
  2. Step 2: Convert to fraction form
    359,089.02/538,647.15 = 134,425.80/x
  3. Step 3: Cross multiply
    359,089.02x = 538,647.15 × 134,425.80
  4. Step 4: Simplify right side
    359,089.02x = 72,408,074,056.47
  5. Step 5: Solve for x
    x = 72,408,074,056.47/359,089.02
  6. Step 6: Final answer
    x = 201,643.80

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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.