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Finding the Fourth Proportional to 40,644.10, 56,979.50 and 40,644.10

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Solution

The fourth proportional to 40,644.10, 56,979.50 and 40,644.10 is: 56,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,644.10 : 56,979.50 = 40,644.10 : x
  2. Step 2: Convert to fraction form
    40,644.10/56,979.50 = 40,644.10/x
  3. Step 3: Cross multiply
    40,644.10x = 56,979.50 × 40,644.10
  4. Step 4: Simplify right side
    40,644.10x = 2,315,880,495.95
  5. Step 5: Solve for x
    x = 2,315,880,495.95/40,644.10
  6. Step 6: Final answer
    x = 56,979.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.