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Finding the Fourth Proportional to 140,187.78, 193,458.58 and 76,525.63

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Solution

The fourth proportional to 140,187.78, 193,458.58 and 76,525.63 is: 105,605.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,187.78 : 193,458.58 = 76,525.63 : x
  2. Step 2: Convert to fraction form
    140,187.78/193,458.58 = 76,525.63/x
  3. Step 3: Cross multiply
    140,187.78x = 193,458.58 × 76,525.63
  4. Step 4: Simplify right side
    140,187.78x = 14,804,539,038.44
  5. Step 5: Solve for x
    x = 14,804,539,038.44/140,187.78
  6. Step 6: Final answer
    x = 105,605.06

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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.