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Finding the Fourth Proportional to 199,289.40, 298,934.10 and 191,513.40

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Solution

The fourth proportional to 199,289.40, 298,934.10 and 191,513.40 is: 287,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,289.40 : 298,934.10 = 191,513.40 : x
  2. Step 2: Convert to fraction form
    199,289.40/298,934.10 = 191,513.40/x
  3. Step 3: Cross multiply
    199,289.40x = 298,934.10 × 191,513.40
  4. Step 4: Simplify right side
    199,289.40x = 57,249,885,866.94
  5. Step 5: Solve for x
    x = 57,249,885,866.94/199,289.40
  6. Step 6: Final answer
    x = 287,270.10

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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.