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Finding the Fourth Proportional to 353,063.88, 487,116.18 and 219,005.64

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Solution

The fourth proportional to 353,063.88, 487,116.18 and 219,005.64 is: 302,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,063.88 : 487,116.18 = 219,005.64 : x
  2. Step 2: Convert to fraction form
    353,063.88/487,116.18 = 219,005.64/x
  3. Step 3: Cross multiply
    353,063.88x = 487,116.18 × 219,005.64
  4. Step 4: Simplify right side
    353,063.88x = 106,681,190,755.26
  5. Step 5: Solve for x
    x = 106,681,190,755.26/353,063.88
  6. Step 6: Final answer
    x = 302,158.33

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1.5x scale

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.