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Finding the Fourth Proportional to 76,474.43, 105,533.29 and 42,482.58

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Solution

The fourth proportional to 76,474.43, 105,533.29 and 42,482.58 is: 58,625.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,474.43 : 105,533.29 = 42,482.58 : x
  2. Step 2: Convert to fraction form
    76,474.43/105,533.29 = 42,482.58/x
  3. Step 3: Cross multiply
    76,474.43x = 105,533.29 × 42,482.58
  4. Step 4: Simplify right side
    76,474.43x = 4,483,326,435.09
  5. Step 5: Solve for x
    x = 4,483,326,435.09/76,474.43
  6. Step 6: Final answer
    x = 58,625.17

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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.