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Finding the Fourth Proportional to 511,856.60, 767,784.90 and 503,983.40

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Solution

The fourth proportional to 511,856.60, 767,784.90 and 503,983.40 is: 755,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,856.60 : 767,784.90 = 503,983.40 : x
  2. Step 2: Convert to fraction form
    511,856.60/767,784.90 = 503,983.40/x
  3. Step 3: Cross multiply
    511,856.60x = 767,784.90 × 503,983.40
  4. Step 4: Simplify right side
    511,856.60x = 386,950,844,370.66
  5. Step 5: Solve for x
    x = 386,950,844,370.66/511,856.60
  6. Step 6: Final answer
    x = 755,975.10

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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.