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Finding the Fourth Proportional to 709,818.60, 979,991.82 and 451,841.16

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Solution

The fourth proportional to 709,818.60, 979,991.82 and 451,841.16 is: 623,822.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,818.60 : 979,991.82 = 451,841.16 : x
  2. Step 2: Convert to fraction form
    709,818.60/979,991.82 = 451,841.16/x
  3. Step 3: Cross multiply
    709,818.60x = 979,991.82 × 451,841.16
  4. Step 4: Simplify right side
    709,818.60x = 442,800,640,739.31
  5. Step 5: Solve for x
    x = 442,800,640,739.31/709,818.60
  6. Step 6: Final answer
    x = 623,822.26

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1.5x scale

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.