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Finding the Fourth Proportional to 593,145.20, 889,717.80 and 435,681.20

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Solution

The fourth proportional to 593,145.20, 889,717.80 and 435,681.20 is: 653,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,145.20 : 889,717.80 = 435,681.20 : x
  2. Step 2: Convert to fraction form
    593,145.20/889,717.80 = 435,681.20/x
  3. Step 3: Cross multiply
    593,145.20x = 889,717.80 × 435,681.20
  4. Step 4: Simplify right side
    593,145.20x = 387,633,318,765.36
  5. Step 5: Solve for x
    x = 387,633,318,765.36/593,145.20
  6. Step 6: Final answer
    x = 653,521.80

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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.