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Finding the Fourth Proportional to 476,887.86, 715,442.58 and 139,914.90

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Solution

The fourth proportional to 476,887.86, 715,442.58 and 139,914.90 is: 209,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,887.86 : 715,442.58 = 139,914.90 : x
  2. Step 2: Convert to fraction form
    476,887.86/715,442.58 = 139,914.90/x
  3. Step 3: Cross multiply
    476,887.86x = 715,442.58 × 139,914.90
  4. Step 4: Simplify right side
    476,887.86x = 100,101,077,036.44
  5. Step 5: Solve for x
    x = 100,101,077,036.44/476,887.86
  6. Step 6: Final answer
    x = 209,904.85

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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.