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Finding the Fourth Proportional to 201,325.32, 302,020.76 and 66,349.16

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Solution

The fourth proportional to 201,325.32, 302,020.76 and 66,349.16 is: 99,534.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,325.32 : 302,020.76 = 66,349.16 : x
  2. Step 2: Convert to fraction form
    201,325.32/302,020.76 = 66,349.16/x
  3. Step 3: Cross multiply
    201,325.32x = 302,020.76 × 66,349.16
  4. Step 4: Simplify right side
    201,325.32x = 20,038,823,728.56
  5. Step 5: Solve for x
    x = 20,038,823,728.56/201,325.32
  6. Step 6: Final answer
    x = 99,534.54

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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.