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Finding the Fourth Proportional to 387,496.63, 534,809.55 and 226,351.18

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Solution

The fourth proportional to 387,496.63, 534,809.55 and 226,351.18 is: 312,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,496.63 : 534,809.55 = 226,351.18 : x
  2. Step 2: Convert to fraction form
    387,496.63/534,809.55 = 226,351.18/x
  3. Step 3: Cross multiply
    387,496.63x = 534,809.55 × 226,351.18
  4. Step 4: Simplify right side
    387,496.63x = 121,054,772,717.77
  5. Step 5: Solve for x
    x = 121,054,772,717.77/387,496.63
  6. Step 6: Final answer
    x = 312,402.13

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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.