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Finding the Fourth Proportional to 92,681.80, 139,022.70 and 62,938.60

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Solution

The fourth proportional to 92,681.80, 139,022.70 and 62,938.60 is: 94,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,681.80 : 139,022.70 = 62,938.60 : x
  2. Step 2: Convert to fraction form
    92,681.80/139,022.70 = 62,938.60/x
  3. Step 3: Cross multiply
    92,681.80x = 139,022.70 × 62,938.60
  4. Step 4: Simplify right side
    92,681.80x = 8,749,894,106.22
  5. Step 5: Solve for x
    x = 8,749,894,106.22/92,681.80
  6. Step 6: Final answer
    x = 94,407.90

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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.