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Finding the Fourth Proportional to 91,014.92, 136,583.90 and 31,851.11

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Solution

The fourth proportional to 91,014.92, 136,583.90 and 31,851.11 is: 47,798.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,014.92 : 136,583.90 = 31,851.11 : x
  2. Step 2: Convert to fraction form
    91,014.92/136,583.90 = 31,851.11/x
  3. Step 3: Cross multiply
    91,014.92x = 136,583.90 × 31,851.11
  4. Step 4: Simplify right side
    91,014.92x = 4,350,347,980.95
  5. Step 5: Solve for x
    x = 4,350,347,980.95/91,014.92
  6. Step 6: Final answer
    x = 47,798.19

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1.5x scale

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.