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Finding the Fourth Proportional to 334,445.65, 461,403.61 and 191,128.81

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Solution

The fourth proportional to 334,445.65, 461,403.61 and 191,128.81 is: 263,682.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,445.65 : 461,403.61 = 191,128.81 : x
  2. Step 2: Convert to fraction form
    334,445.65/461,403.61 = 191,128.81/x
  3. Step 3: Cross multiply
    334,445.65x = 461,403.61 × 191,128.81
  4. Step 4: Simplify right side
    334,445.65x = 88,187,522,909.00
  5. Step 5: Solve for x
    x = 88,187,522,909.00/334,445.65
  6. Step 6: Final answer
    x = 263,682.67

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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.