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Finding the Fourth Proportional to 593,816.80, 890,725.20 and 390,863.20

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Solution

The fourth proportional to 593,816.80, 890,725.20 and 390,863.20 is: 586,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,816.80 : 890,725.20 = 390,863.20 : x
  2. Step 2: Convert to fraction form
    593,816.80/890,725.20 = 390,863.20/x
  3. Step 3: Cross multiply
    593,816.80x = 890,725.20 × 390,863.20
  4. Step 4: Simplify right side
    593,816.80x = 348,151,701,992.64
  5. Step 5: Solve for x
    x = 348,151,701,992.64/593,816.80
  6. Step 6: Final answer
    x = 586,294.80

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Double scale
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Similar ratio
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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.