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Finding the Fourth Proportional to 552,402.10, 828,603.15 and 315,768.70

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Solution

The fourth proportional to 552,402.10, 828,603.15 and 315,768.70 is: 473,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,402.10 : 828,603.15 = 315,768.70 : x
  2. Step 2: Convert to fraction form
    552,402.10/828,603.15 = 315,768.70/x
  3. Step 3: Cross multiply
    552,402.10x = 828,603.15 × 315,768.70
  4. Step 4: Simplify right side
    552,402.10x = 261,646,939,491.41
  5. Step 5: Solve for x
    x = 261,646,939,491.41/552,402.10
  6. Step 6: Final answer
    x = 473,653.05

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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.