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Finding the Fourth Proportional to 196,012.80, 293,630.40 and 112,809.60

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Solution

The fourth proportional to 196,012.80, 293,630.40 and 112,809.60 is: 168,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,012.80 : 293,630.40 = 112,809.60 : x
  2. Step 2: Convert to fraction form
    196,012.80/293,630.40 = 112,809.60/x
  3. Step 3: Cross multiply
    196,012.80x = 293,630.40 × 112,809.60
  4. Step 4: Simplify right side
    196,012.80x = 33,124,327,971.84
  5. Step 5: Solve for x
    x = 33,124,327,971.84/196,012.80
  6. Step 6: Final answer
    x = 168,990.64

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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.