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Finding the Fourth Proportional to 292,712.96, 439,268.88 and 134,942.72

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Solution

The fourth proportional to 292,712.96, 439,268.88 and 134,942.72 is: 202,506.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,712.96 : 439,268.88 = 134,942.72 : x
  2. Step 2: Convert to fraction form
    292,712.96/439,268.88 = 134,942.72/x
  3. Step 3: Cross multiply
    292,712.96x = 439,268.88 × 134,942.72
  4. Step 4: Simplify right side
    292,712.96x = 59,276,137,478.55
  5. Step 5: Solve for x
    x = 59,276,137,478.55/292,712.96
  6. Step 6: Final answer
    x = 202,506.02

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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.