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Finding the Fourth Proportional to 638,390.98, 957,726.42 and 189,147.16

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Solution

The fourth proportional to 638,390.98, 957,726.42 and 189,147.16 is: 283,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,390.98 : 957,726.42 = 189,147.16 : x
  2. Step 2: Convert to fraction form
    638,390.98/957,726.42 = 189,147.16/x
  3. Step 3: Cross multiply
    638,390.98x = 957,726.42 × 189,147.16
  4. Step 4: Simplify right side
    638,390.98x = 181,151,232,399.97
  5. Step 5: Solve for x
    x = 181,151,232,399.97/638,390.98
  6. Step 6: Final answer
    x = 283,762.21

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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.