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Finding the Fourth Proportional to 266,907.60, 400,359.78 and 107,055.72

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Solution

The fourth proportional to 266,907.60, 400,359.78 and 107,055.72 is: 160,582.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,907.60 : 400,359.78 = 107,055.72 : x
  2. Step 2: Convert to fraction form
    266,907.60/400,359.78 = 107,055.72/x
  3. Step 3: Cross multiply
    266,907.60x = 400,359.78 × 107,055.72
  4. Step 4: Simplify right side
    266,907.60x = 42,860,804,506.94
  5. Step 5: Solve for x
    x = 42,860,804,506.94/266,907.60
  6. Step 6: Final answer
    x = 160,582.93

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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.