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Finding the Fourth Proportional to 472,708.45, 652,313.68 and 257,846.77

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Solution

The fourth proportional to 472,708.45, 652,313.68 and 257,846.77 is: 355,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,708.45 : 652,313.68 = 257,846.77 : x
  2. Step 2: Convert to fraction form
    472,708.45/652,313.68 = 257,846.77/x
  3. Step 3: Cross multiply
    472,708.45x = 652,313.68 × 257,846.77
  4. Step 4: Simplify right side
    472,708.45x = 168,196,975,414.81
  5. Step 5: Solve for x
    x = 168,196,975,414.81/472,708.45
  6. Step 6: Final answer
    x = 355,815.46

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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.