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Finding the Fourth Proportional to 70,603.70, 105,905.55 and 35,611.70

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Solution

The fourth proportional to 70,603.70, 105,905.55 and 35,611.70 is: 53,417.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,603.70 : 105,905.55 = 35,611.70 : x
  2. Step 2: Convert to fraction form
    70,603.70/105,905.55 = 35,611.70/x
  3. Step 3: Cross multiply
    70,603.70x = 105,905.55 × 35,611.70
  4. Step 4: Simplify right side
    70,603.70x = 3,771,476,674.94
  5. Step 5: Solve for x
    x = 3,771,476,674.94/70,603.70
  6. Step 6: Final answer
    x = 53,417.55

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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.