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Finding the Fourth Proportional to 292,280.64, 438,433.72 and 92,615.74

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Solution

The fourth proportional to 292,280.64, 438,433.72 and 92,615.74 is: 138,927.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,280.64 : 438,433.72 = 92,615.74 : x
  2. Step 2: Convert to fraction form
    292,280.64/438,433.72 = 92,615.74/x
  3. Step 3: Cross multiply
    292,280.64x = 438,433.72 × 92,615.74
  4. Step 4: Simplify right side
    292,280.64x = 40,605,863,418.75
  5. Step 5: Solve for x
    x = 40,605,863,418.75/292,280.64
  6. Step 6: Final answer
    x = 138,927.65

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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.