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Finding the Fourth Proportional to 42,681.60, 63,940.80 and 22,953.60

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Solution

The fourth proportional to 42,681.60, 63,940.80 and 22,953.60 is: 34,386.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,681.60 : 63,940.80 = 22,953.60 : x
  2. Step 2: Convert to fraction form
    42,681.60/63,940.80 = 22,953.60/x
  3. Step 3: Cross multiply
    42,681.60x = 63,940.80 × 22,953.60
  4. Step 4: Simplify right side
    42,681.60x = 1,467,671,546.88
  5. Step 5: Solve for x
    x = 1,467,671,546.88/42,681.60
  6. Step 6: Final answer
    x = 34,386.52

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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.