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Finding the Fourth Proportional to 638,753.32, 957,966.48 and 189,369.16

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Solution

The fourth proportional to 638,753.32, 957,966.48 and 189,369.16 is: 284,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,753.32 : 957,966.48 = 189,369.16 : x
  2. Step 2: Convert to fraction form
    638,753.32/957,966.48 = 189,369.16/x
  3. Step 3: Cross multiply
    638,753.32x = 957,966.48 × 189,369.16
  4. Step 4: Simplify right side
    638,753.32x = 181,409,307,625.76
  5. Step 5: Solve for x
    x = 181,409,307,625.76/638,753.32
  6. Step 6: Final answer
    x = 284,005.27

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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.