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Finding the Fourth Proportional to 56,590.40, 84,823.60 and 28,465.60

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Solution

The fourth proportional to 56,590.40, 84,823.60 and 28,465.60 is: 42,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,590.40 : 84,823.60 = 28,465.60 : x
  2. Step 2: Convert to fraction form
    56,590.40/84,823.60 = 28,465.60/x
  3. Step 3: Cross multiply
    56,590.40x = 84,823.60 × 28,465.60
  4. Step 4: Simplify right side
    56,590.40x = 2,414,554,668.16
  5. Step 5: Solve for x
    x = 2,414,554,668.16/56,590.40
  6. Step 6: Final answer
    x = 42,667.21

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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.