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Finding the Fourth Proportional to 201,203,998.80, 301,805,998.20 and 191,638,060.80

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Solution

The fourth proportional to 201,203,998.80, 301,805,998.20 and 191,638,060.80 is: 287,457,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,203,998.80 : 301,805,998.20 = 191,638,060.80 : x
  2. Step 2: Convert to fraction form
    201,203,998.80/301,805,998.20 = 191,638,060.80/x
  3. Step 3: Cross multiply
    201,203,998.80x = 301,805,998.20 × 191,638,060.80
  4. Step 4: Simplify right side
    201,203,998.80x = 57,837,516,232,856,288
  5. Step 5: Solve for x
    x = 57,837,516,232,856,288/201,203,998.80
  6. Step 6: Final answer
    x = 287,457,091.20

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1.5x scale

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.