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Finding the Fourth Proportional to 74,655.89, 103,017.65 and 45,970.95

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Solution

The fourth proportional to 74,655.89, 103,017.65 and 45,970.95 is: 63,435.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,655.89 : 103,017.65 = 45,970.95 : x
  2. Step 2: Convert to fraction form
    74,655.89/103,017.65 = 45,970.95/x
  3. Step 3: Cross multiply
    74,655.89x = 103,017.65 × 45,970.95
  4. Step 4: Simplify right side
    74,655.89x = 4,735,819,237.27
  5. Step 5: Solve for x
    x = 4,735,819,237.27/74,655.89
  6. Step 6: Final answer
    x = 63,435.31

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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.