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Finding the Fourth Proportional to 35,374.98, 48,810.96 and 21,039.60

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Solution

The fourth proportional to 35,374.98, 48,810.96 and 21,039.60 is: 29,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,374.98 : 48,810.96 = 21,039.60 : x
  2. Step 2: Convert to fraction form
    35,374.98/48,810.96 = 21,039.60/x
  3. Step 3: Cross multiply
    35,374.98x = 48,810.96 × 21,039.60
  4. Step 4: Simplify right side
    35,374.98x = 1,026,963,074.02
  5. Step 5: Solve for x
    x = 1,026,963,074.02/35,374.98
  6. Step 6: Final answer
    x = 29,030.77

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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.