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Finding the Fourth Proportional to 619,776.04, 855,255.78 and 347,818.60

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Solution

The fourth proportional to 619,776.04, 855,255.78 and 347,818.60 is: 479,969.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,776.04 : 855,255.78 = 347,818.60 : x
  2. Step 2: Convert to fraction form
    619,776.04/855,255.78 = 347,818.60/x
  3. Step 3: Cross multiply
    619,776.04x = 855,255.78 × 347,818.60
  4. Step 4: Simplify right side
    619,776.04x = 297,473,868,041.51
  5. Step 5: Solve for x
    x = 297,473,868,041.51/619,776.04
  6. Step 6: Final answer
    x = 479,969.94

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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.