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Finding the Fourth Proportional to 219,506.32, 329,033.48 and 86,332.60

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Solution

The fourth proportional to 219,506.32, 329,033.48 and 86,332.60 is: 129,410.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,506.32 : 329,033.48 = 86,332.60 : x
  2. Step 2: Convert to fraction form
    219,506.32/329,033.48 = 86,332.60/x
  3. Step 3: Cross multiply
    219,506.32x = 329,033.48 × 86,332.60
  4. Step 4: Simplify right side
    219,506.32x = 28,406,315,815.45
  5. Step 5: Solve for x
    x = 28,406,315,815.45/219,506.32
  6. Step 6: Final answer
    x = 129,410.01

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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.