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Finding the Fourth Proportional to 74,643.61, 111,885.48 and 37,122.90

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Solution

The fourth proportional to 74,643.61, 111,885.48 and 37,122.90 is: 55,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,643.61 : 111,885.48 = 37,122.90 : x
  2. Step 2: Convert to fraction form
    74,643.61/111,885.48 = 37,122.90/x
  3. Step 3: Cross multiply
    74,643.61x = 111,885.48 × 37,122.90
  4. Step 4: Simplify right side
    74,643.61x = 4,153,513,485.49
  5. Step 5: Solve for x
    x = 4,153,513,485.49/74,643.61
  6. Step 6: Final answer
    x = 55,644.60

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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.