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Finding the Fourth Proportional to 127,938.94, 191,950.86 and 39,193.32

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Solution

The fourth proportional to 127,938.94, 191,950.86 and 39,193.32 is: 58,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.94 : 191,950.86 = 39,193.32 : x
  2. Step 2: Convert to fraction form
    127,938.94/191,950.86 = 39,193.32/x
  3. Step 3: Cross multiply
    127,938.94x = 191,950.86 × 39,193.32
  4. Step 4: Simplify right side
    127,938.94x = 7,523,191,480.26
  5. Step 5: Solve for x
    x = 7,523,191,480.26/127,938.94
  6. Step 6: Final answer
    x = 58,802.98

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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.