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Finding the Fourth Proportional to 74,892.48, 103,348.80 and 40,899.84

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Solution

The fourth proportional to 74,892.48, 103,348.80 and 40,899.84 is: 56,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,892.48 : 103,348.80 = 40,899.84 : x
  2. Step 2: Convert to fraction form
    74,892.48/103,348.80 = 40,899.84/x
  3. Step 3: Cross multiply
    74,892.48x = 103,348.80 × 40,899.84
  4. Step 4: Simplify right side
    74,892.48x = 4,226,949,384.19
  5. Step 5: Solve for x
    x = 4,226,949,384.19/74,892.48
  6. Step 6: Final answer
    x = 56,440.24

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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.