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Finding the Fourth Proportional to 76,793.56, 105,987.90 and 44,547.28

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Solution

The fourth proportional to 76,793.56, 105,987.90 and 44,547.28 is: 61,482.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,793.56 : 105,987.90 = 44,547.28 : x
  2. Step 2: Convert to fraction form
    76,793.56/105,987.90 = 44,547.28/x
  3. Step 3: Cross multiply
    76,793.56x = 105,987.90 × 44,547.28
  4. Step 4: Simplify right side
    76,793.56x = 4,721,472,657.91
  5. Step 5: Solve for x
    x = 4,721,472,657.91/76,793.56
  6. Step 6: Final answer
    x = 61,482.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.