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Finding the Fourth Proportional to 371,167.99, 512,217.78 and 201,402.11

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Solution

The fourth proportional to 371,167.99, 512,217.78 and 201,402.11 is: 277,938.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,167.99 : 512,217.78 = 201,402.11 : x
  2. Step 2: Convert to fraction form
    371,167.99/512,217.78 = 201,402.11/x
  3. Step 3: Cross multiply
    371,167.99x = 512,217.78 × 201,402.11
  4. Step 4: Simplify right side
    371,167.99x = 103,161,742,196.80
  5. Step 5: Solve for x
    x = 103,161,742,196.80/371,167.99
  6. Step 6: Final answer
    x = 277,938.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.