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Finding the Fourth Proportional to 113,772.80, 170,659.20 and 64,006.40

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Solution

The fourth proportional to 113,772.80, 170,659.20 and 64,006.40 is: 96,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,772.80 : 170,659.20 = 64,006.40 : x
  2. Step 2: Convert to fraction form
    113,772.80/170,659.20 = 64,006.40/x
  3. Step 3: Cross multiply
    113,772.80x = 170,659.20 × 64,006.40
  4. Step 4: Simplify right side
    113,772.80x = 10,923,281,018.88
  5. Step 5: Solve for x
    x = 10,923,281,018.88/113,772.80
  6. Step 6: Final answer
    x = 96,009.60

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1.5x scale

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.