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Finding the Fourth Proportional to 108,709.65, 163,080.68 and 38,583.09

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Solution

The fourth proportional to 108,709.65, 163,080.68 and 38,583.09 is: 57,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,709.65 : 163,080.68 = 38,583.09 : x
  2. Step 2: Convert to fraction form
    108,709.65/163,080.68 = 38,583.09/x
  3. Step 3: Cross multiply
    108,709.65x = 163,080.68 × 38,583.09
  4. Step 4: Simplify right side
    108,709.65x = 6,292,156,360.79
  5. Step 5: Solve for x
    x = 6,292,156,360.79/108,709.65
  6. Step 6: Final answer
    x = 57,880.38

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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.