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Finding the Fourth Proportional to 61,543.55, 84,934.76 and 34,688.58

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Solution

The fourth proportional to 61,543.55, 84,934.76 and 34,688.58 is: 47,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,543.55 : 84,934.76 = 34,688.58 : x
  2. Step 2: Convert to fraction form
    61,543.55/84,934.76 = 34,688.58/x
  3. Step 3: Cross multiply
    61,543.55x = 84,934.76 × 34,688.58
  4. Step 4: Simplify right side
    61,543.55x = 2,946,266,043.60
  5. Step 5: Solve for x
    x = 2,946,266,043.60/61,543.55
  6. Step 6: Final answer
    x = 47,872.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.