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Finding the Fourth Proportional to 293,999.40, 440,999.10 and 128,111.40

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Solution

The fourth proportional to 293,999.40, 440,999.10 and 128,111.40 is: 192,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,999.40 : 440,999.10 = 128,111.40 : x
  2. Step 2: Convert to fraction form
    293,999.40/440,999.10 = 128,111.40/x
  3. Step 3: Cross multiply
    293,999.40x = 440,999.10 × 128,111.40
  4. Step 4: Simplify right side
    293,999.40x = 56,497,012,099.74
  5. Step 5: Solve for x
    x = 56,497,012,099.74/293,999.40
  6. Step 6: Final answer
    x = 192,167.10

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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.