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Finding the Fourth Proportional to 108,205.64, 163,047.05 and 88,916.30

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Solution

The fourth proportional to 108,205.64, 163,047.05 and 88,916.30 is: 133,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,205.64 : 163,047.05 = 88,916.30 : x
  2. Step 2: Convert to fraction form
    108,205.64/163,047.05 = 88,916.30/x
  3. Step 3: Cross multiply
    108,205.64x = 163,047.05 × 88,916.30
  4. Step 4: Simplify right side
    108,205.64x = 14,497,539,152.10
  5. Step 5: Solve for x
    x = 14,497,539,152.10/108,205.64
  6. Step 6: Final answer
    x = 133,981.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.