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Finding the Fourth Proportional to 368,766.72, 553,587.48 and 310,330.08

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Solution

The fourth proportional to 368,766.72, 553,587.48 and 310,330.08 is: 465,863.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,766.72 : 553,587.48 = 310,330.08 : x
  2. Step 2: Convert to fraction form
    368,766.72/553,587.48 = 310,330.08/x
  3. Step 3: Cross multiply
    368,766.72x = 553,587.48 × 310,330.08
  4. Step 4: Simplify right side
    368,766.72x = 171,794,846,955.40
  5. Step 5: Solve for x
    x = 171,794,846,955.40/368,766.72
  6. Step 6: Final answer
    x = 465,863.21

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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.