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Finding the Fourth Proportional to 92,143.95, 127,197.89 and 61,946.79

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Solution

The fourth proportional to 92,143.95, 127,197.89 and 61,946.79 is: 85,512.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,143.95 : 127,197.89 = 61,946.79 : x
  2. Step 2: Convert to fraction form
    92,143.95/127,197.89 = 61,946.79/x
  3. Step 3: Cross multiply
    92,143.95x = 127,197.89 × 61,946.79
  4. Step 4: Simplify right side
    92,143.95x = 7,879,501,018.99
  5. Step 5: Solve for x
    x = 7,879,501,018.99/92,143.95
  6. Step 6: Final answer
    x = 85,512.95

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1.5x scale

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.