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Finding the Fourth Proportional to 35,681.60, 53,509.80 and 12,302.60

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Solution

The fourth proportional to 35,681.60, 53,509.80 and 12,302.60 is: 18,449.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,681.60 : 53,509.80 = 12,302.60 : x
  2. Step 2: Convert to fraction form
    35,681.60/53,509.80 = 12,302.60/x
  3. Step 3: Cross multiply
    35,681.60x = 53,509.80 × 12,302.60
  4. Step 4: Simplify right side
    35,681.60x = 658,309,665.48
  5. Step 5: Solve for x
    x = 658,309,665.48/35,681.60
  6. Step 6: Final answer
    x = 18,449.56

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1.5x scale

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.