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Finding the Fourth Proportional to 593,812.80, 890,719.20 and 390,859.20

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Solution

The fourth proportional to 593,812.80, 890,719.20 and 390,859.20 is: 586,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,812.80 : 890,719.20 = 390,859.20 : x
  2. Step 2: Convert to fraction form
    593,812.80/890,719.20 = 390,859.20/x
  3. Step 3: Cross multiply
    593,812.80x = 890,719.20 × 390,859.20
  4. Step 4: Simplify right side
    593,812.80x = 348,145,793,936.64
  5. Step 5: Solve for x
    x = 348,145,793,936.64/593,812.80
  6. Step 6: Final answer
    x = 586,288.80

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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.