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Finding the Fourth Proportional to 92,000.90, 137,925.93 and 47,640.29

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Solution

The fourth proportional to 92,000.90, 137,925.93 and 47,640.29 is: 71,421.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,000.90 : 137,925.93 = 47,640.29 : x
  2. Step 2: Convert to fraction form
    92,000.90/137,925.93 = 47,640.29/x
  3. Step 3: Cross multiply
    92,000.90x = 137,925.93 × 47,640.29
  4. Step 4: Simplify right side
    92,000.90x = 6,570,831,303.72
  5. Step 5: Solve for x
    x = 6,570,831,303.72/92,000.90
  6. Step 6: Final answer
    x = 71,421.38

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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.