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Finding the Fourth Proportional to 309,050.40, 463,460.40 and 122,023.20

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Solution

The fourth proportional to 309,050.40, 463,460.40 and 122,023.20 is: 182,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,050.40 : 463,460.40 = 122,023.20 : x
  2. Step 2: Convert to fraction form
    309,050.40/463,460.40 = 122,023.20/x
  3. Step 3: Cross multiply
    309,050.40x = 463,460.40 × 122,023.20
  4. Step 4: Simplify right side
    309,050.40x = 56,552,921,081.28
  5. Step 5: Solve for x
    x = 56,552,921,081.28/309,050.40
  6. Step 6: Final answer
    x = 182,989.32

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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.