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Finding the Fourth Proportional to 63,145.76, 94,723.76 and 21,024.32

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Solution

The fourth proportional to 63,145.76, 94,723.76 and 21,024.32 is: 31,538.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,145.76 : 94,723.76 = 21,024.32 : x
  2. Step 2: Convert to fraction form
    63,145.76/94,723.76 = 21,024.32/x
  3. Step 3: Cross multiply
    63,145.76x = 94,723.76 × 21,024.32
  4. Step 4: Simplify right side
    63,145.76x = 1,991,502,641.84
  5. Step 5: Solve for x
    x = 1,991,502,641.84/63,145.76
  6. Step 6: Final answer
    x = 31,538.18

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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.