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Finding the Fourth Proportional to 662,516,510.80, 993,774,766.20 and 177,891,307.60

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Solution

The fourth proportional to 662,516,510.80, 993,774,766.20 and 177,891,307.60 is: 266,836,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,516,510.80 : 993,774,766.20 = 177,891,307.60 : x
  2. Step 2: Convert to fraction form
    662,516,510.80/993,774,766.20 = 177,891,307.60/x
  3. Step 3: Cross multiply
    662,516,510.80x = 993,774,766.20 × 177,891,307.60
  4. Step 4: Simplify right side
    662,516,510.80x = 176,783,892,619,202,272
  5. Step 5: Solve for x
    x = 176,783,892,619,202,272/662,516,510.80
  6. Step 6: Final answer
    x = 266,836,961.40

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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.