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Finding the Fourth Proportional to 176,647,557.60, 264,971,336.40 and 128,274,616.80

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Solution

The fourth proportional to 176,647,557.60, 264,971,336.40 and 128,274,616.80 is: 192,411,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,647,557.60 : 264,971,336.40 = 128,274,616.80 : x
  2. Step 2: Convert to fraction form
    176,647,557.60/264,971,336.40 = 128,274,616.80/x
  3. Step 3: Cross multiply
    176,647,557.60x = 264,971,336.40 × 128,274,616.80
  4. Step 4: Simplify right side
    176,647,557.60x = 33,989,096,639,693,892
  5. Step 5: Solve for x
    x = 33,989,096,639,693,892/176,647,557.60
  6. Step 6: Final answer
    x = 192,411,925.20

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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.