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Finding the Fourth Proportional to 519,776.47, 778,262.91 and 339,415.12

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Solution

The fourth proportional to 519,776.47, 778,262.91 and 339,415.12 is: 508,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,776.47 : 778,262.91 = 339,415.12 : x
  2. Step 2: Convert to fraction form
    519,776.47/778,262.91 = 339,415.12/x
  3. Step 3: Cross multiply
    519,776.47x = 778,262.91 × 339,415.12
  4. Step 4: Simplify right side
    519,776.47x = 264,154,198,989.20
  5. Step 5: Solve for x
    x = 264,154,198,989.20/519,776.47
  6. Step 6: Final answer
    x = 508,207.30

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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.