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Finding the Fourth Proportional to 530,846.70, 732,564.64 and 289,128.54

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Solution

The fourth proportional to 530,846.70, 732,564.64 and 289,128.54 is: 398,995.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,846.70 : 732,564.64 = 289,128.54 : x
  2. Step 2: Convert to fraction form
    530,846.70/732,564.64 = 289,128.54/x
  3. Step 3: Cross multiply
    530,846.70x = 732,564.64 × 289,128.54
  4. Step 4: Simplify right side
    530,846.70x = 211,805,344,818.83
  5. Step 5: Solve for x
    x = 211,805,344,818.83/530,846.70
  6. Step 6: Final answer
    x = 398,995.31

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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.