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Finding the Fourth Proportional to 350,705.45, 525,928.86 and 126,005.57

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Solution

The fourth proportional to 350,705.45, 525,928.86 and 126,005.57 is: 188,961.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,705.45 : 525,928.86 = 126,005.57 : x
  2. Step 2: Convert to fraction form
    350,705.45/525,928.86 = 126,005.57/x
  3. Step 3: Cross multiply
    350,705.45x = 525,928.86 × 126,005.57
  4. Step 4: Simplify right side
    350,705.45x = 66,269,963,154.11
  5. Step 5: Solve for x
    x = 66,269,963,154.11/350,705.45
  6. Step 6: Final answer
    x = 188,961.89

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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.