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Finding the Fourth Proportional to 35,728.60, 53,600.60 and 12,038.52

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Solution

The fourth proportional to 35,728.60, 53,600.60 and 12,038.52 is: 18,060.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,728.60 : 53,600.60 = 12,038.52 : x
  2. Step 2: Convert to fraction form
    35,728.60/53,600.60 = 12,038.52/x
  3. Step 3: Cross multiply
    35,728.60x = 53,600.60 × 12,038.52
  4. Step 4: Simplify right side
    35,728.60x = 645,271,895.11
  5. Step 5: Solve for x
    x = 645,271,895.11/35,728.60
  6. Step 6: Final answer
    x = 18,060.37

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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.