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Finding the Fourth Proportional to 253,499.30, 349,829.01 and 138,777.59

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Solution

The fourth proportional to 253,499.30, 349,829.01 and 138,777.59 is: 191,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,499.30 : 349,829.01 = 138,777.59 : x
  2. Step 2: Convert to fraction form
    253,499.30/349,829.01 = 138,777.59/x
  3. Step 3: Cross multiply
    253,499.30x = 349,829.01 × 138,777.59
  4. Step 4: Simplify right side
    253,499.30x = 48,548,425,170.74
  5. Step 5: Solve for x
    x = 48,548,425,170.74/253,499.30
  6. Step 6: Final answer
    x = 191,513.05

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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.