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Finding the Fourth Proportional to 103,688.80, 155,533.20 and 44,514.40

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Solution

The fourth proportional to 103,688.80, 155,533.20 and 44,514.40 is: 66,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.80 : 155,533.20 = 44,514.40 : x
  2. Step 2: Convert to fraction form
    103,688.80/155,533.20 = 44,514.40/x
  3. Step 3: Cross multiply
    103,688.80x = 155,533.20 × 44,514.40
  4. Step 4: Simplify right side
    103,688.80x = 6,923,467,078.08
  5. Step 5: Solve for x
    x = 6,923,467,078.08/103,688.80
  6. Step 6: Final answer
    x = 66,771.60

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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.