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Finding the Fourth Proportional to 571,025.40, 856,538.10 and 518,537.40

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Solution

The fourth proportional to 571,025.40, 856,538.10 and 518,537.40 is: 777,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,025.40 : 856,538.10 = 518,537.40 : x
  2. Step 2: Convert to fraction form
    571,025.40/856,538.10 = 518,537.40/x
  3. Step 3: Cross multiply
    571,025.40x = 856,538.10 × 518,537.40
  4. Step 4: Simplify right side
    571,025.40x = 444,147,039,374.94
  5. Step 5: Solve for x
    x = 444,147,039,374.94/571,025.40
  6. Step 6: Final answer
    x = 777,806.10

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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.