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Finding the Fourth Proportional to 616,540.40, 924,810.60 and 217,631.60

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Solution

The fourth proportional to 616,540.40, 924,810.60 and 217,631.60 is: 326,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,540.40 : 924,810.60 = 217,631.60 : x
  2. Step 2: Convert to fraction form
    616,540.40/924,810.60 = 217,631.60/x
  3. Step 3: Cross multiply
    616,540.40x = 924,810.60 × 217,631.60
  4. Step 4: Simplify right side
    616,540.40x = 201,268,010,574.96
  5. Step 5: Solve for x
    x = 201,268,010,574.96/616,540.40
  6. Step 6: Final answer
    x = 326,447.40

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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.