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Finding the Fourth Proportional to 94,605.94, 130,420.54 and 74,427.78

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Solution

The fourth proportional to 94,605.94, 130,420.54 and 74,427.78 is: 102,603.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,605.94 : 130,420.54 = 74,427.78 : x
  2. Step 2: Convert to fraction form
    94,605.94/130,420.54 = 74,427.78/x
  3. Step 3: Cross multiply
    94,605.94x = 130,420.54 × 74,427.78
  4. Step 4: Simplify right side
    94,605.94x = 9,706,911,258.60
  5. Step 5: Solve for x
    x = 9,706,911,258.60/94,605.94
  6. Step 6: Final answer
    x = 102,603.61

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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.