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Finding the Fourth Proportional to 399,041.40, 597,755.70 and 248,820.60

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Solution

The fourth proportional to 399,041.40, 597,755.70 and 248,820.60 is: 372,728.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,041.40 : 597,755.70 = 248,820.60 : x
  2. Step 2: Convert to fraction form
    399,041.40/597,755.70 = 248,820.60/x
  3. Step 3: Cross multiply
    399,041.40x = 597,755.70 × 248,820.60
  4. Step 4: Simplify right side
    399,041.40x = 148,733,931,927.42
  5. Step 5: Solve for x
    x = 148,733,931,927.42/399,041.40
  6. Step 6: Final answer
    x = 372,728.07

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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.