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Finding the Fourth Proportional to 121,348.80, 182,066.40 and 117,028.80

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Solution

The fourth proportional to 121,348.80, 182,066.40 and 117,028.80 is: 175,584.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,348.80 : 182,066.40 = 117,028.80 : x
  2. Step 2: Convert to fraction form
    121,348.80/182,066.40 = 117,028.80/x
  3. Step 3: Cross multiply
    121,348.80x = 182,066.40 × 117,028.80
  4. Step 4: Simplify right side
    121,348.80x = 21,307,012,312.32
  5. Step 5: Solve for x
    x = 21,307,012,312.32/121,348.80
  6. Step 6: Final answer
    x = 175,584.86

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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.