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Finding the Fourth Proportional to 619,130.71, 928,504.50 and 299,083.78

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Solution

The fourth proportional to 619,130.71, 928,504.50 and 299,083.78 is: 448,533.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,130.71 : 928,504.50 = 299,083.78 : x
  2. Step 2: Convert to fraction form
    619,130.71/928,504.50 = 299,083.78/x
  3. Step 3: Cross multiply
    619,130.71x = 928,504.50 × 299,083.78
  4. Step 4: Simplify right side
    619,130.71x = 277,700,635,607.01
  5. Step 5: Solve for x
    x = 277,700,635,607.01/619,130.71
  6. Step 6: Final answer
    x = 448,533.13

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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.