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Finding the Fourth Proportional to 200,773.35, 300,840.14 and 105,999.71

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Solution

The fourth proportional to 200,773.35, 300,840.14 and 105,999.71 is: 158,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,773.35 : 300,840.14 = 105,999.71 : x
  2. Step 2: Convert to fraction form
    200,773.35/300,840.14 = 105,999.71/x
  3. Step 3: Cross multiply
    200,773.35x = 300,840.14 × 105,999.71
  4. Step 4: Simplify right side
    200,773.35x = 31,888,966,357.16
  5. Step 5: Solve for x
    x = 31,888,966,357.16/200,773.35
  6. Step 6: Final answer
    x = 158,830.67

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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.