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Finding the Fourth Proportional to 170,009.60, 255,014.40 and 168,972.80

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Solution

The fourth proportional to 170,009.60, 255,014.40 and 168,972.80 is: 253,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,009.60 : 255,014.40 = 168,972.80 : x
  2. Step 2: Convert to fraction form
    170,009.60/255,014.40 = 168,972.80/x
  3. Step 3: Cross multiply
    170,009.60x = 255,014.40 × 168,972.80
  4. Step 4: Simplify right side
    170,009.60x = 43,090,497,208.32
  5. Step 5: Solve for x
    x = 43,090,497,208.32/170,009.60
  6. Step 6: Final answer
    x = 253,459.20

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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.