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Finding the Fourth Proportional to 35,485.60, 53,209.20 and 14,685.60

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Solution

The fourth proportional to 35,485.60, 53,209.20 and 14,685.60 is: 22,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,485.60 : 53,209.20 = 14,685.60 : x
  2. Step 2: Convert to fraction form
    35,485.60/53,209.20 = 14,685.60/x
  3. Step 3: Cross multiply
    35,485.60x = 53,209.20 × 14,685.60
  4. Step 4: Simplify right side
    35,485.60x = 781,409,027.52
  5. Step 5: Solve for x
    x = 781,409,027.52/35,485.60
  6. Step 6: Final answer
    x = 22,020.45

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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.