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Finding the Fourth Proportional to 56,495.70, 84,743.48 and 21,435.30

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Solution

The fourth proportional to 56,495.70, 84,743.48 and 21,435.30 is: 32,152.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,495.70 : 84,743.48 = 21,435.30 : x
  2. Step 2: Convert to fraction form
    56,495.70/84,743.48 = 21,435.30/x
  3. Step 3: Cross multiply
    56,495.70x = 84,743.48 × 21,435.30
  4. Step 4: Simplify right side
    56,495.70x = 1,816,501,916.84
  5. Step 5: Solve for x
    x = 1,816,501,916.84/56,495.70
  6. Step 6: Final answer
    x = 32,152.92

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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.