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Finding the Fourth Proportional to 154,161.66, 212,749.29 and 89,630.58

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Solution

The fourth proportional to 154,161.66, 212,749.29 and 89,630.58 is: 123,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,161.66 : 212,749.29 = 89,630.58 : x
  2. Step 2: Convert to fraction form
    154,161.66/212,749.29 = 89,630.58/x
  3. Step 3: Cross multiply
    154,161.66x = 212,749.29 × 89,630.58
  4. Step 4: Simplify right side
    154,161.66x = 19,068,842,257.29
  5. Step 5: Solve for x
    x = 19,068,842,257.29/154,161.66
  6. Step 6: Final answer
    x = 123,693.80

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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.