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Finding the Fourth Proportional to 108,718.70, 163,078.05 and 97,832.30

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Solution

The fourth proportional to 108,718.70, 163,078.05 and 97,832.30 is: 146,748.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,718.70 : 163,078.05 = 97,832.30 : x
  2. Step 2: Convert to fraction form
    108,718.70/163,078.05 = 97,832.30/x
  3. Step 3: Cross multiply
    108,718.70x = 163,078.05 × 97,832.30
  4. Step 4: Simplify right side
    108,718.70x = 15,954,300,711.02
  5. Step 5: Solve for x
    x = 15,954,300,711.02/108,718.70
  6. Step 6: Final answer
    x = 146,748.45

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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.