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Finding the Fourth Proportional to 74,612.61, 102,947.67 and 42,340.05

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Solution

The fourth proportional to 74,612.61, 102,947.67 and 42,340.05 is: 58,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,612.61 : 102,947.67 = 42,340.05 : x
  2. Step 2: Convert to fraction form
    74,612.61/102,947.67 = 42,340.05/x
  3. Step 3: Cross multiply
    74,612.61x = 102,947.67 × 42,340.05
  4. Step 4: Simplify right side
    74,612.61x = 4,358,809,495.18
  5. Step 5: Solve for x
    x = 4,358,809,495.18/74,612.61
  6. Step 6: Final answer
    x = 58,419.21

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