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Finding the Fourth Proportional to 139,725.34, 209,523.74 and 44,938.01

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Solution

The fourth proportional to 139,725.34, 209,523.74 and 44,938.01 is: 67,386.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,725.34 : 209,523.74 = 44,938.01 : x
  2. Step 2: Convert to fraction form
    139,725.34/209,523.74 = 44,938.01/x
  3. Step 3: Cross multiply
    139,725.34x = 209,523.74 × 44,938.01
  4. Step 4: Simplify right side
    139,725.34x = 9,415,580,222.48
  5. Step 5: Solve for x
    x = 9,415,580,222.48/139,725.34
  6. Step 6: Final answer
    x = 67,386.35

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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.