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Finding the Fourth Proportional to 201,316.80, 301,975.20 and 61,082.40

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Solution

The fourth proportional to 201,316.80, 301,975.20 and 61,082.40 is: 91,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,316.80 : 301,975.20 = 61,082.40 : x
  2. Step 2: Convert to fraction form
    201,316.80/301,975.20 = 61,082.40/x
  3. Step 3: Cross multiply
    201,316.80x = 301,975.20 × 61,082.40
  4. Step 4: Simplify right side
    201,316.80x = 18,445,369,956.48
  5. Step 5: Solve for x
    x = 18,445,369,956.48/201,316.80
  6. Step 6: Final answer
    x = 91,623.60

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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.