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Finding the Fourth Proportional to 40,978.58, 61,428.65 and 16,010.33

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Solution

The fourth proportional to 40,978.58, 61,428.65 and 16,010.33 is: 24,000.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,978.58 : 61,428.65 = 16,010.33 : x
  2. Step 2: Convert to fraction form
    40,978.58/61,428.65 = 16,010.33/x
  3. Step 3: Cross multiply
    40,978.58x = 61,428.65 × 16,010.33
  4. Step 4: Simplify right side
    40,978.58x = 983,492,570.76
  5. Step 5: Solve for x
    x = 983,492,570.76/40,978.58
  6. Step 6: Final answer
    x = 24,000.17

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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.