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Finding the Fourth Proportional to 476,877.92, 715,427.52 and 139,904.96

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Solution

The fourth proportional to 476,877.92, 715,427.52 and 139,904.96 is: 209,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,877.92 : 715,427.52 = 139,904.96 : x
  2. Step 2: Convert to fraction form
    476,877.92/715,427.52 = 139,904.96/x
  3. Step 3: Cross multiply
    476,877.92x = 715,427.52 × 139,904.96
  4. Step 4: Simplify right side
    476,877.92x = 100,091,858,568.50
  5. Step 5: Solve for x
    x = 100,091,858,568.50/476,877.92
  6. Step 6: Final answer
    x = 209,889.90

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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.