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Finding the Fourth Proportional to 607,889.10, 838,991.16 and 353,387.82

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Solution

The fourth proportional to 607,889.10, 838,991.16 and 353,387.82 is: 487,735.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,889.10 : 838,991.16 = 353,387.82 : x
  2. Step 2: Convert to fraction form
    607,889.10/838,991.16 = 353,387.82/x
  3. Step 3: Cross multiply
    607,889.10x = 838,991.16 × 353,387.82
  4. Step 4: Simplify right side
    607,889.10x = 296,489,257,031.67
  5. Step 5: Solve for x
    x = 296,489,257,031.67/607,889.10
  6. Step 6: Final answer
    x = 487,735.77

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1.5x scale

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.