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Finding the Fourth Proportional to 618,132.10, 926,755.35 and 238,728.10

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Solution

The fourth proportional to 618,132.10, 926,755.35 and 238,728.10 is: 357,921.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,132.10 : 926,755.35 = 238,728.10 : x
  2. Step 2: Convert to fraction form
    618,132.10/926,755.35 = 238,728.10/x
  3. Step 3: Cross multiply
    618,132.10x = 926,755.35 × 238,728.10
  4. Step 4: Simplify right side
    618,132.10x = 221,242,543,870.34
  5. Step 5: Solve for x
    x = 221,242,543,870.34/618,132.10
  6. Step 6: Final answer
    x = 357,921.14

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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.