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Finding the Fourth Proportional to 45,905.70, 68,858.55 and 16,356.90

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Solution

The fourth proportional to 45,905.70, 68,858.55 and 16,356.90 is: 24,535.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,905.70 : 68,858.55 = 16,356.90 : x
  2. Step 2: Convert to fraction form
    45,905.70/68,858.55 = 16,356.90/x
  3. Step 3: Cross multiply
    45,905.70x = 68,858.55 × 16,356.90
  4. Step 4: Simplify right side
    45,905.70x = 1,126,312,416.50
  5. Step 5: Solve for x
    x = 1,126,312,416.50/45,905.70
  6. Step 6: Final answer
    x = 24,535.35

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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.