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Finding the Fourth Proportional to 407,585.92, 611,380.92 and 238,987.66

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Solution

The fourth proportional to 407,585.92, 611,380.92 and 238,987.66 is: 358,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,585.92 : 611,380.92 = 238,987.66 : x
  2. Step 2: Convert to fraction form
    407,585.92/611,380.92 = 238,987.66/x
  3. Step 3: Cross multiply
    407,585.92x = 611,380.92 × 238,987.66
  4. Step 4: Simplify right side
    407,585.92x = 146,112,495,439.45
  5. Step 5: Solve for x
    x = 146,112,495,439.45/407,585.92
  6. Step 6: Final answer
    x = 358,482.69

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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.