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Finding the Fourth Proportional to 219,361.96, 302,565.54 and 151,406.20

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Solution

The fourth proportional to 219,361.96, 302,565.54 and 151,406.20 is: 208,834.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,361.96 : 302,565.54 = 151,406.20 : x
  2. Step 2: Convert to fraction form
    219,361.96/302,565.54 = 151,406.20/x
  3. Step 3: Cross multiply
    219,361.96x = 302,565.54 × 151,406.20
  4. Step 4: Simplify right side
    219,361.96x = 45,810,298,662.35
  5. Step 5: Solve for x
    x = 45,810,298,662.35/219,361.96
  6. Step 6: Final answer
    x = 208,834.29

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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.