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Finding the Fourth Proportional to 205,326.60, 307,989.90 and 168,001.80

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Solution

The fourth proportional to 205,326.60, 307,989.90 and 168,001.80 is: 252,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,326.60 : 307,989.90 = 168,001.80 : x
  2. Step 2: Convert to fraction form
    205,326.60/307,989.90 = 168,001.80/x
  3. Step 3: Cross multiply
    205,326.60x = 307,989.90 × 168,001.80
  4. Step 4: Simplify right side
    205,326.60x = 51,742,857,581.82
  5. Step 5: Solve for x
    x = 51,742,857,581.82/205,326.60
  6. Step 6: Final answer
    x = 252,002.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.