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Finding the Fourth Proportional to 108,927.60, 163,269.90 and 42,345.60

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Solution

The fourth proportional to 108,927.60, 163,269.90 and 42,345.60 is: 63,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,927.60 : 163,269.90 = 42,345.60 : x
  2. Step 2: Convert to fraction form
    108,927.60/163,269.90 = 42,345.60/x
  3. Step 3: Cross multiply
    108,927.60x = 163,269.90 × 42,345.60
  4. Step 4: Simplify right side
    108,927.60x = 6,913,761,877.44
  5. Step 5: Solve for x
    x = 6,913,761,877.44/108,927.60
  6. Step 6: Final answer
    x = 63,471.17

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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.