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Finding the Fourth Proportional to 399,859.40, 598,914.30 and 355,536.20

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Solution

The fourth proportional to 399,859.40, 598,914.30 and 355,536.20 is: 532,526.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,859.40 : 598,914.30 = 355,536.20 : x
  2. Step 2: Convert to fraction form
    399,859.40/598,914.30 = 355,536.20/x
  3. Step 3: Cross multiply
    399,859.40x = 598,914.30 × 355,536.20
  4. Step 4: Simplify right side
    399,859.40x = 212,935,714,347.66
  5. Step 5: Solve for x
    x = 212,935,714,347.66/399,859.40
  6. Step 6: Final answer
    x = 532,526.47

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1.5x scale

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.