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Finding the Fourth Proportional to 611,175.60, 916,763.40 and 161,965.80

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Solution

The fourth proportional to 611,175.60, 916,763.40 and 161,965.80 is: 242,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,175.60 : 916,763.40 = 161,965.80 : x
  2. Step 2: Convert to fraction form
    611,175.60/916,763.40 = 161,965.80/x
  3. Step 3: Cross multiply
    611,175.60x = 916,763.40 × 161,965.80
  4. Step 4: Simplify right side
    611,175.60x = 148,484,317,491.72
  5. Step 5: Solve for x
    x = 148,484,317,491.72/611,175.60
  6. Step 6: Final answer
    x = 242,948.70

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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.