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Finding the Fourth Proportional to 134,645.63, 185,808.49 and 74,216.48

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Solution

The fourth proportional to 134,645.63, 185,808.49 and 74,216.48 is: 102,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,645.63 : 185,808.49 = 74,216.48 : x
  2. Step 2: Convert to fraction form
    134,645.63/185,808.49 = 74,216.48/x
  3. Step 3: Cross multiply
    134,645.63x = 185,808.49 × 74,216.48
  4. Step 4: Simplify right side
    134,645.63x = 13,790,050,967.33
  5. Step 5: Solve for x
    x = 13,790,050,967.33/134,645.63
  6. Step 6: Final answer
    x = 102,417.37

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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.