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Finding the Fourth Proportional to 359,269.20, 538,903.80 and 122,533.20

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Solution

The fourth proportional to 359,269.20, 538,903.80 and 122,533.20 is: 183,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,269.20 : 538,903.80 = 122,533.20 : x
  2. Step 2: Convert to fraction form
    359,269.20/538,903.80 = 122,533.20/x
  3. Step 3: Cross multiply
    359,269.20x = 538,903.80 × 122,533.20
  4. Step 4: Simplify right side
    359,269.20x = 66,033,607,106.16
  5. Step 5: Solve for x
    x = 66,033,607,106.16/359,269.20
  6. Step 6: Final answer
    x = 183,799.80

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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.