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Finding the Fourth Proportional to 35,940.90, 53,892.95 and 19,314.93

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Solution

The fourth proportional to 35,940.90, 53,892.95 and 19,314.93 is: 28,962.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,940.90 : 53,892.95 = 19,314.93 : x
  2. Step 2: Convert to fraction form
    35,940.90/53,892.95 = 19,314.93/x
  3. Step 3: Cross multiply
    35,940.90x = 53,892.95 × 19,314.93
  4. Step 4: Simplify right side
    35,940.90x = 1,040,938,460.17
  5. Step 5: Solve for x
    x = 1,040,938,460.17/35,940.90
  6. Step 6: Final answer
    x = 28,962.50

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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.