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Finding the Fourth Proportional to 251,955.58, 347,699.64 and 138,778.06

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Solution

The fourth proportional to 251,955.58, 347,699.64 and 138,778.06 is: 191,514.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,955.58 : 347,699.64 = 138,778.06 : x
  2. Step 2: Convert to fraction form
    251,955.58/347,699.64 = 138,778.06/x
  3. Step 3: Cross multiply
    251,955.58x = 347,699.64 × 138,778.06
  4. Step 4: Simplify right side
    251,955.58x = 48,253,081,501.90
  5. Step 5: Solve for x
    x = 48,253,081,501.90/251,955.58
  6. Step 6: Final answer
    x = 191,514.24

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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.