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Finding the Fourth Proportional to 92,235.40, 127,285.10 and 53,988

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Solution

The fourth proportional to 92,235.40, 127,285.10 and 53,988 is: 74,503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,235.40 : 127,285.10 = 53,988 : x
  2. Step 2: Convert to fraction form
    92,235.40/127,285.10 = 53,988/x
  3. Step 3: Cross multiply
    92,235.40x = 127,285.10 × 53,988
  4. Step 4: Simplify right side
    92,235.40x = 6,871,867,978.80
  5. Step 5: Solve for x
    x = 6,871,867,978.80/92,235.40
  6. Step 6: Final answer
    x = 74,503.59

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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.