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Finding the Fourth Proportional to 68,000.40, 93,630.60 and 56,530.80

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Solution

The fourth proportional to 68,000.40, 93,630.60 and 56,530.80 is: 77,837.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.40 : 93,630.60 = 56,530.80 : x
  2. Step 2: Convert to fraction form
    68,000.40/93,630.60 = 56,530.80/x
  3. Step 3: Cross multiply
    68,000.40x = 93,630.60 × 56,530.80
  4. Step 4: Simplify right side
    68,000.40x = 5,293,012,722.48
  5. Step 5: Solve for x
    x = 5,293,012,722.48/68,000.40
  6. Step 6: Final answer
    x = 77,837.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.