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Finding the Fourth Proportional to 163,075.16, 244,690.05 and 78,788.08

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Solution

The fourth proportional to 163,075.16, 244,690.05 and 78,788.08 is: 118,219.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,075.16 : 244,690.05 = 78,788.08 : x
  2. Step 2: Convert to fraction form
    163,075.16/244,690.05 = 78,788.08/x
  3. Step 3: Cross multiply
    163,075.16x = 244,690.05 × 78,788.08
  4. Step 4: Simplify right side
    163,075.16x = 19,278,659,234.60
  5. Step 5: Solve for x
    x = 19,278,659,234.60/163,075.16
  6. Step 6: Final answer
    x = 118,219.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.