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Finding the Fourth Proportional to 74,021.80, 111,032.70 and 73,503.40

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Solution

The fourth proportional to 74,021.80, 111,032.70 and 73,503.40 is: 110,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,021.80 : 111,032.70 = 73,503.40 : x
  2. Step 2: Convert to fraction form
    74,021.80/111,032.70 = 73,503.40/x
  3. Step 3: Cross multiply
    74,021.80x = 111,032.70 × 73,503.40
  4. Step 4: Simplify right side
    74,021.80x = 8,161,280,961.18
  5. Step 5: Solve for x
    x = 8,161,280,961.18/74,021.80
  6. Step 6: Final answer
    x = 110,255.10

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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.