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Finding the Fourth Proportional to 154,203.88, 212,809.38 and 93,764.68

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Solution

The fourth proportional to 154,203.88, 212,809.38 and 93,764.68 is: 129,400.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,203.88 : 212,809.38 = 93,764.68 : x
  2. Step 2: Convert to fraction form
    154,203.88/212,809.38 = 93,764.68/x
  3. Step 3: Cross multiply
    154,203.88x = 212,809.38 × 93,764.68
  4. Step 4: Simplify right side
    154,203.88x = 19,954,003,416.70
  5. Step 5: Solve for x
    x = 19,954,003,416.70/154,203.88
  6. Step 6: Final answer
    x = 129,400.14

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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.