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Finding the Fourth Proportional to 346,498.74, 478,163.21 and 193,539.11

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Solution

The fourth proportional to 346,498.74, 478,163.21 and 193,539.11 is: 267,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,498.74 : 478,163.21 = 193,539.11 : x
  2. Step 2: Convert to fraction form
    346,498.74/478,163.21 = 193,539.11/x
  3. Step 3: Cross multiply
    346,498.74x = 478,163.21 × 193,539.11
  4. Step 4: Simplify right side
    346,498.74x = 92,543,278,739.63
  5. Step 5: Solve for x
    x = 92,543,278,739.63/346,498.74
  6. Step 6: Final answer
    x = 267,081.14

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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.