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Finding the Fourth Proportional to 154,599.36, 213,349.80 and 86,615.88

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Solution

The fourth proportional to 154,599.36, 213,349.80 and 86,615.88 is: 119,531.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,599.36 : 213,349.80 = 86,615.88 : x
  2. Step 2: Convert to fraction form
    154,599.36/213,349.80 = 86,615.88/x
  3. Step 3: Cross multiply
    154,599.36x = 213,349.80 × 86,615.88
  4. Step 4: Simplify right side
    154,599.36x = 18,479,480,674.82
  5. Step 5: Solve for x
    x = 18,479,480,674.82/154,599.36
  6. Step 6: Final answer
    x = 119,531.42

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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.