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Finding the Fourth Proportional to 58,728.20, 88,101.90 and 19,274.60

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Solution

The fourth proportional to 58,728.20, 88,101.90 and 19,274.60 is: 28,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,728.20 : 88,101.90 = 19,274.60 : x
  2. Step 2: Convert to fraction form
    58,728.20/88,101.90 = 19,274.60/x
  3. Step 3: Cross multiply
    58,728.20x = 88,101.90 × 19,274.60
  4. Step 4: Simplify right side
    58,728.20x = 1,698,128,881.74
  5. Step 5: Solve for x
    x = 1,698,128,881.74/58,728.20
  6. Step 6: Final answer
    x = 28,915.05

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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.