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Finding the Fourth Proportional to 621,219.06, 855,166.68 and 459,769.86

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Solution

The fourth proportional to 621,219.06, 855,166.68 and 459,769.86 is: 632,916.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,219.06 : 855,166.68 = 459,769.86 : x
  2. Step 2: Convert to fraction form
    621,219.06/855,166.68 = 459,769.86/x
  3. Step 3: Cross multiply
    621,219.06x = 855,166.68 × 459,769.86
  4. Step 4: Simplify right side
    621,219.06x = 393,179,864,740.27
  5. Step 5: Solve for x
    x = 393,179,864,740.27/621,219.06
  6. Step 6: Final answer
    x = 632,916.62

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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.