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Finding the Fourth Proportional to 688,665.83, 950,309.28 and 430,658.55

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Solution

The fourth proportional to 688,665.83, 950,309.28 and 430,658.55 is: 594,277.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,665.83 : 950,309.28 = 430,658.55 : x
  2. Step 2: Convert to fraction form
    688,665.83/950,309.28 = 430,658.55/x
  3. Step 3: Cross multiply
    688,665.83x = 950,309.28 × 430,658.55
  4. Step 4: Simplify right side
    688,665.83x = 409,258,816,576.34
  5. Step 5: Solve for x
    x = 409,258,816,576.34/688,665.83
  6. Step 6: Final answer
    x = 594,277.81

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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.