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Finding the Fourth Proportional to 688,688.89, 950,503.47 and 573,785.31

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Solution

The fourth proportional to 688,688.89, 950,503.47 and 573,785.31 is: 791,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,688.89 : 950,503.47 = 573,785.31 : x
  2. Step 2: Convert to fraction form
    688,688.89/950,503.47 = 573,785.31/x
  3. Step 3: Cross multiply
    688,688.89x = 950,503.47 × 573,785.31
  4. Step 4: Simplify right side
    688,688.89x = 545,384,928,190.03
  5. Step 5: Solve for x
    x = 545,384,928,190.03/688,688.89
  6. Step 6: Final answer
    x = 791,917.71

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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.