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Finding the Fourth Proportional to 570,673.68, 856,020.24 and 215,854.80

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Solution

The fourth proportional to 570,673.68, 856,020.24 and 215,854.80 is: 323,785.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,673.68 : 856,020.24 = 215,854.80 : x
  2. Step 2: Convert to fraction form
    570,673.68/856,020.24 = 215,854.80/x
  3. Step 3: Cross multiply
    570,673.68x = 856,020.24 × 215,854.80
  4. Step 4: Simplify right side
    570,673.68x = 184,776,077,701.15
  5. Step 5: Solve for x
    x = 184,776,077,701.15/570,673.68
  6. Step 6: Final answer
    x = 323,785.88

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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.