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Finding the Fourth Proportional to 103,178.88, 154,812.05 and 56,377.08

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Solution

The fourth proportional to 103,178.88, 154,812.05 and 56,377.08 is: 84,589.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,178.88 : 154,812.05 = 56,377.08 : x
  2. Step 2: Convert to fraction form
    103,178.88/154,812.05 = 56,377.08/x
  3. Step 3: Cross multiply
    103,178.88x = 154,812.05 × 56,377.08
  4. Step 4: Simplify right side
    103,178.88x = 8,727,851,327.81
  5. Step 5: Solve for x
    x = 8,727,851,327.81/103,178.88
  6. Step 6: Final answer
    x = 84,589.51

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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.