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Finding the Fourth Proportional to 216,570.54, 324,902.18 and 64,779.54

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Solution

The fourth proportional to 216,570.54, 324,902.18 and 64,779.54 is: 97,183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,570.54 : 324,902.18 = 64,779.54 : x
  2. Step 2: Convert to fraction form
    216,570.54/324,902.18 = 64,779.54/x
  3. Step 3: Cross multiply
    216,570.54x = 324,902.18 × 64,779.54
  4. Step 4: Simplify right side
    216,570.54x = 21,047,013,765.40
  5. Step 5: Solve for x
    x = 21,047,013,765.40/216,570.54
  6. Step 6: Final answer
    x = 97,183.18

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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.