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Finding the Fourth Proportional to 570,916.40, 856,115.40 and 215,812.40

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Solution

The fourth proportional to 570,916.40, 856,115.40 and 215,812.40 is: 323,620.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,916.40 : 856,115.40 = 215,812.40 : x
  2. Step 2: Convert to fraction form
    570,916.40/856,115.40 = 215,812.40/x
  3. Step 3: Cross multiply
    570,916.40x = 856,115.40 × 215,812.40
  4. Step 4: Simplify right side
    570,916.40x = 184,760,319,150.96
  5. Step 5: Solve for x
    x = 184,760,319,150.96/570,916.40
  6. Step 6: Final answer
    x = 323,620.62

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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.