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Finding the Fourth Proportional to 351,278.76, 526,918.52 and 164,421.48

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Solution

The fourth proportional to 351,278.76, 526,918.52 and 164,421.48 is: 246,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,278.76 : 526,918.52 = 164,421.48 : x
  2. Step 2: Convert to fraction form
    351,278.76/526,918.52 = 164,421.48/x
  3. Step 3: Cross multiply
    351,278.76x = 526,918.52 × 164,421.48
  4. Step 4: Simplify right side
    351,278.76x = 86,636,722,897.81
  5. Step 5: Solve for x
    x = 86,636,722,897.81/351,278.76
  6. Step 6: Final answer
    x = 246,632.40

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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.