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Finding the Fourth Proportional to 363,928.19, 546,061.37 and 139,214.34

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Solution

The fourth proportional to 363,928.19, 546,061.37 and 139,214.34 is: 208,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,928.19 : 546,061.37 = 139,214.34 : x
  2. Step 2: Convert to fraction form
    363,928.19/546,061.37 = 139,214.34/x
  3. Step 3: Cross multiply
    363,928.19x = 546,061.37 × 139,214.34
  4. Step 4: Simplify right side
    363,928.19x = 76,019,572,527.97
  5. Step 5: Solve for x
    x = 76,019,572,527.97/363,928.19
  6. Step 6: Final answer
    x = 208,886.19

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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.