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Finding the Fourth Proportional to 103,622.70, 155,434.05 and 33,509.10

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Solution

The fourth proportional to 103,622.70, 155,434.05 and 33,509.10 is: 50,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,622.70 : 155,434.05 = 33,509.10 : x
  2. Step 2: Convert to fraction form
    103,622.70/155,434.05 = 33,509.10/x
  3. Step 3: Cross multiply
    103,622.70x = 155,434.05 × 33,509.10
  4. Step 4: Simplify right side
    103,622.70x = 5,208,455,124.86
  5. Step 5: Solve for x
    x = 5,208,455,124.86/103,622.70
  6. Step 6: Final answer
    x = 50,263.65

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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.