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Finding the Fourth Proportional to 209,393.66, 289,014.58 and 118,802.66

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Solution

The fourth proportional to 209,393.66, 289,014.58 and 118,802.66 is: 163,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,393.66 : 289,014.58 = 118,802.66 : x
  2. Step 2: Convert to fraction form
    209,393.66/289,014.58 = 118,802.66/x
  3. Step 3: Cross multiply
    209,393.66x = 289,014.58 × 118,802.66
  4. Step 4: Simplify right side
    209,393.66x = 34,335,700,882.78
  5. Step 5: Solve for x
    x = 34,335,700,882.78/209,393.66
  6. Step 6: Final answer
    x = 163,976.79

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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.