Home / 196,647,981.60-295,307,895.60-128,791,495.20

Finding the Fourth Proportional to 196,647,981.60, 295,307,895.60 and 128,791,495.20

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Solution

The fourth proportional to 196,647,981.60, 295,307,895.60 and 128,791,495.20 is: 193,407,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,647,981.60 : 295,307,895.60 = 128,791,495.20 : x
  2. Step 2: Convert to fraction form
    196,647,981.60/295,307,895.60 = 128,791,495.20/x
  3. Step 3: Cross multiply
    196,647,981.60x = 295,307,895.60 × 128,791,495.20
  4. Step 4: Simplify right side
    196,647,981.60x = 38,033,145,418,689,504
  5. Step 5: Solve for x
    x = 38,033,145,418,689,504/196,647,981.60
  6. Step 6: Final answer
    x = 193,407,250.40

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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.