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Finding the Fourth Proportional to 245,345.70, 368,018.55 and 165,629.55

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Solution

The fourth proportional to 245,345.70, 368,018.55 and 165,629.55 is: 248,444.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,345.70 : 368,018.55 = 165,629.55 : x
  2. Step 2: Convert to fraction form
    245,345.70/368,018.55 = 165,629.55/x
  3. Step 3: Cross multiply
    245,345.70x = 368,018.55 × 165,629.55
  4. Step 4: Simplify right side
    245,345.70x = 60,954,746,828.15
  5. Step 5: Solve for x
    x = 60,954,746,828.15/245,345.70
  6. Step 6: Final answer
    x = 248,444.33

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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.