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Finding the Fourth Proportional to 169,985.60, 255,075.60 and 117,432.80

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Solution

The fourth proportional to 169,985.60, 255,075.60 and 117,432.80 is: 176,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,985.60 : 255,075.60 = 117,432.80 : x
  2. Step 2: Convert to fraction form
    169,985.60/255,075.60 = 117,432.80/x
  3. Step 3: Cross multiply
    169,985.60x = 255,075.60 × 117,432.80
  4. Step 4: Simplify right side
    169,985.60x = 29,954,241,919.68
  5. Step 5: Solve for x
    x = 29,954,241,919.68/169,985.60
  6. Step 6: Final answer
    x = 176,216.35

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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.