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Finding the Fourth Proportional to 585,525.40, 878,288.10 and 436,809.40

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Solution

The fourth proportional to 585,525.40, 878,288.10 and 436,809.40 is: 655,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,525.40 : 878,288.10 = 436,809.40 : x
  2. Step 2: Convert to fraction form
    585,525.40/878,288.10 = 436,809.40/x
  3. Step 3: Cross multiply
    585,525.40x = 878,288.10 × 436,809.40
  4. Step 4: Simplify right side
    585,525.40x = 383,644,497,988.14
  5. Step 5: Solve for x
    x = 383,644,497,988.14/585,525.40
  6. Step 6: Final answer
    x = 655,214.10

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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.