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Finding the Fourth Proportional to 72,748.96, 109,123.44 and 62,858.32

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Solution

The fourth proportional to 72,748.96, 109,123.44 and 62,858.32 is: 94,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748.96 : 109,123.44 = 62,858.32 : x
  2. Step 2: Convert to fraction form
    72,748.96/109,123.44 = 62,858.32/x
  3. Step 3: Cross multiply
    72,748.96x = 109,123.44 × 62,858.32
  4. Step 4: Simplify right side
    72,748.96x = 6,859,316,111.02
  5. Step 5: Solve for x
    x = 6,859,316,111.02/72,748.96
  6. Step 6: Final answer
    x = 94,287.48

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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.