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Finding the Fourth Proportional to 638,127.40, 957,018.30 and 188,847.40

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Solution

The fourth proportional to 638,127.40, 957,018.30 and 188,847.40 is: 283,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,127.40 : 957,018.30 = 188,847.40 : x
  2. Step 2: Convert to fraction form
    638,127.40/957,018.30 = 188,847.40/x
  3. Step 3: Cross multiply
    638,127.40x = 957,018.30 × 188,847.40
  4. Step 4: Simplify right side
    638,127.40x = 180,730,417,707.42
  5. Step 5: Solve for x
    x = 180,730,417,707.42/638,127.40
  6. Step 6: Final answer
    x = 283,219.96

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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.