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Finding the Fourth Proportional to 117,446.90, 162,075.90 and 63,730.54

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Solution

The fourth proportional to 117,446.90, 162,075.90 and 63,730.54 is: 87,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,446.90 : 162,075.90 = 63,730.54 : x
  2. Step 2: Convert to fraction form
    117,446.90/162,075.90 = 63,730.54/x
  3. Step 3: Cross multiply
    117,446.90x = 162,075.90 × 63,730.54
  4. Step 4: Simplify right side
    117,446.90x = 10,329,184,627.99
  5. Step 5: Solve for x
    x = 10,329,184,627.99/117,446.90
  6. Step 6: Final answer
    x = 87,947.70

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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.