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Finding the Fourth Proportional to 219,633.32, 329,223.72 and 86,459.60

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Solution

The fourth proportional to 219,633.32, 329,223.72 and 86,459.60 is: 129,600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,633.32 : 329,223.72 = 86,459.60 : x
  2. Step 2: Convert to fraction form
    219,633.32/329,223.72 = 86,459.60/x
  3. Step 3: Cross multiply
    219,633.32x = 329,223.72 × 86,459.60
  4. Step 4: Simplify right side
    219,633.32x = 28,464,551,141.71
  5. Step 5: Solve for x
    x = 28,464,551,141.71/219,633.32
  6. Step 6: Final answer
    x = 129,600.33

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1.5x scale

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.