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Finding the Fourth Proportional to 659,576.40, 986,412.15 and 553,288.20

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Solution

The fourth proportional to 659,576.40, 986,412.15 and 553,288.20 is: 827,455.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,576.40 : 986,412.15 = 553,288.20 : x
  2. Step 2: Convert to fraction form
    659,576.40/986,412.15 = 553,288.20/x
  3. Step 3: Cross multiply
    659,576.40x = 986,412.15 × 553,288.20
  4. Step 4: Simplify right side
    659,576.40x = 545,770,202,931.63
  5. Step 5: Solve for x
    x = 545,770,202,931.63/659,576.40
  6. Step 6: Final answer
    x = 827,455.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.