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Finding the Fourth Proportional to 40,681.34, 61,028.59 and 12,594.79

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Solution

The fourth proportional to 40,681.34, 61,028.59 and 12,594.79 is: 18,894.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,681.34 : 61,028.59 = 12,594.79 : x
  2. Step 2: Convert to fraction form
    40,681.34/61,028.59 = 12,594.79/x
  3. Step 3: Cross multiply
    40,681.34x = 61,028.59 × 12,594.79
  4. Step 4: Simplify right side
    40,681.34x = 768,642,343.46
  5. Step 5: Solve for x
    x = 768,642,343.46/40,681.34
  6. Step 6: Final answer
    x = 18,894.22

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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.