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Finding the Fourth Proportional to 638,391.98, 957,727.92 and 189,148.16

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Solution

The fourth proportional to 638,391.98, 957,727.92 and 189,148.16 is: 283,763.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,391.98 : 957,727.92 = 189,148.16 : x
  2. Step 2: Convert to fraction form
    638,391.98/957,727.92 = 189,148.16/x
  3. Step 3: Cross multiply
    638,391.98x = 957,727.92 × 189,148.16
  4. Step 4: Simplify right side
    638,391.98x = 181,152,473,848.63
  5. Step 5: Solve for x
    x = 181,152,473,848.63/638,391.98
  6. Step 6: Final answer
    x = 283,763.71

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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.