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Finding the Fourth Proportional to 243,018.70, 364,528.05 and 168,223.30

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Solution

The fourth proportional to 243,018.70, 364,528.05 and 168,223.30 is: 252,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,018.70 : 364,528.05 = 168,223.30 : x
  2. Step 2: Convert to fraction form
    243,018.70/364,528.05 = 168,223.30/x
  3. Step 3: Cross multiply
    243,018.70x = 364,528.05 × 168,223.30
  4. Step 4: Simplify right side
    243,018.70x = 61,322,111,513.57
  5. Step 5: Solve for x
    x = 61,322,111,513.57/243,018.70
  6. Step 6: Final answer
    x = 252,334.95

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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.