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Finding the Fourth Proportional to 613,724.80, 920,639.16 and 187,356.16

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Solution

The fourth proportional to 613,724.80, 920,639.16 and 187,356.16 is: 281,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,724.80 : 920,639.16 = 187,356.16 : x
  2. Step 2: Convert to fraction form
    613,724.80/920,639.16 = 187,356.16/x
  3. Step 3: Cross multiply
    613,724.80x = 920,639.16 × 187,356.16
  4. Step 4: Simplify right side
    613,724.80x = 172,487,417,763.23
  5. Step 5: Solve for x
    x = 172,487,417,763.23/613,724.80
  6. Step 6: Final answer
    x = 281,050.10

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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.