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Finding the Fourth Proportional to 117,446.40, 162,075.21 and 63,730.05

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Solution

The fourth proportional to 117,446.40, 162,075.21 and 63,730.05 is: 87,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,446.40 : 162,075.21 = 63,730.05 : x
  2. Step 2: Convert to fraction form
    117,446.40/162,075.21 = 63,730.05/x
  3. Step 3: Cross multiply
    117,446.40x = 162,075.21 × 63,730.05
  4. Step 4: Simplify right side
    117,446.40x = 10,329,061,237.06
  5. Step 5: Solve for x
    x = 10,329,061,237.06/117,446.40
  6. Step 6: Final answer
    x = 87,947.02

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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.