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Finding the Fourth Proportional to 62,999.76, 86,938.56 and 34,705.20

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Solution

The fourth proportional to 62,999.76, 86,938.56 and 34,705.20 is: 47,892.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,999.76 : 86,938.56 = 34,705.20 : x
  2. Step 2: Convert to fraction form
    62,999.76/86,938.56 = 34,705.20/x
  3. Step 3: Cross multiply
    62,999.76x = 86,938.56 × 34,705.20
  4. Step 4: Simplify right side
    62,999.76x = 3,017,220,112.51
  5. Step 5: Solve for x
    x = 3,017,220,112.51/62,999.76
  6. Step 6: Final answer
    x = 47,892.57

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1.5x scale

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.