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Finding the Fourth Proportional to 294,031.92, 405,802.80 and 286,025.88

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Solution

The fourth proportional to 294,031.92, 405,802.80 and 286,025.88 is: 394,753.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,031.92 : 405,802.80 = 286,025.88 : x
  2. Step 2: Convert to fraction form
    294,031.92/405,802.80 = 286,025.88/x
  3. Step 3: Cross multiply
    294,031.92x = 405,802.80 × 286,025.88
  4. Step 4: Simplify right side
    294,031.92x = 116,070,102,976.46
  5. Step 5: Solve for x
    x = 116,070,102,976.46/294,031.92
  6. Step 6: Final answer
    x = 394,753.41

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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.