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Finding the Fourth Proportional to 313,203.09, 432,221.40 and 169,963.11

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Solution

The fourth proportional to 313,203.09, 432,221.40 and 169,963.11 is: 234,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,203.09 : 432,221.40 = 169,963.11 : x
  2. Step 2: Convert to fraction form
    313,203.09/432,221.40 = 169,963.11/x
  3. Step 3: Cross multiply
    313,203.09x = 432,221.40 × 169,963.11
  4. Step 4: Simplify right side
    313,203.09x = 73,461,693,352.55
  5. Step 5: Solve for x
    x = 73,461,693,352.55/313,203.09
  6. Step 6: Final answer
    x = 234,549.71

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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.