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Finding the Fourth Proportional to 334,388.70, 501,643.80 and 109,686.60

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Solution

The fourth proportional to 334,388.70, 501,643.80 and 109,686.60 is: 164,549.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,388.70 : 501,643.80 = 109,686.60 : x
  2. Step 2: Convert to fraction form
    334,388.70/501,643.80 = 109,686.60/x
  3. Step 3: Cross multiply
    334,388.70x = 501,643.80 × 109,686.60
  4. Step 4: Simplify right side
    334,388.70x = 55,023,602,833.08
  5. Step 5: Solve for x
    x = 55,023,602,833.08/334,388.70
  6. Step 6: Final answer
    x = 164,549.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.