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Finding the Fourth Proportional to 351,360.42, 527,031.06 and 98,643

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Solution

The fourth proportional to 351,360.42, 527,031.06 and 98,643 is: 147,961.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,360.42 : 527,031.06 = 98,643 : x
  2. Step 2: Convert to fraction form
    351,360.42/527,031.06 = 98,643/x
  3. Step 3: Cross multiply
    351,360.42x = 527,031.06 × 98,643
  4. Step 4: Simplify right side
    351,360.42x = 51,987,924,851.58
  5. Step 5: Solve for x
    x = 51,987,924,851.58/351,360.42
  6. Step 6: Final answer
    x = 147,961.81

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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.