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Finding the Fourth Proportional to 103,693.55, 155,473.36 and 56,933.87

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Solution

The fourth proportional to 103,693.55, 155,473.36 and 56,933.87 is: 85,364.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.55 : 155,473.36 = 56,933.87 : x
  2. Step 2: Convert to fraction form
    103,693.55/155,473.36 = 56,933.87/x
  3. Step 3: Cross multiply
    103,693.55x = 155,473.36 × 56,933.87
  4. Step 4: Simplify right side
    103,693.55x = 8,851,700,066.70
  5. Step 5: Solve for x
    x = 8,851,700,066.70/103,693.55
  6. Step 6: Final answer
    x = 85,364.04

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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.