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Finding the Fourth Proportional to 108,783.61, 163,135.55 and 37,687.89

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Solution

The fourth proportional to 108,783.61, 163,135.55 and 37,687.89 is: 56,518.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,783.61 : 163,135.55 = 37,687.89 : x
  2. Step 2: Convert to fraction form
    108,783.61/163,135.55 = 37,687.89/x
  3. Step 3: Cross multiply
    108,783.61x = 163,135.55 × 37,687.89
  4. Step 4: Simplify right side
    108,783.61x = 6,148,233,659.37
  5. Step 5: Solve for x
    x = 6,148,233,659.37/108,783.61
  6. Step 6: Final answer
    x = 56,518.01

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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.