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Finding the Fourth Proportional to 622,794.56, 856,282 and 554,148.80

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Solution

The fourth proportional to 622,794.56, 856,282 and 554,148.80 is: 761,900.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,794.56 : 856,282 = 554,148.80 : x
  2. Step 2: Convert to fraction form
    622,794.56/856,282 = 554,148.80/x
  3. Step 3: Cross multiply
    622,794.56x = 856,282 × 554,148.80
  4. Step 4: Simplify right side
    622,794.56x = 474,507,642,761.60
  5. Step 5: Solve for x
    x = 474,507,642,761.60/622,794.56
  6. Step 6: Final answer
    x = 761,900.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.