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Finding the Fourth Proportional to 201,855,889.80, 302,925,552.30 and 86,922,916.20

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Solution

The fourth proportional to 201,855,889.80, 302,925,552.30 and 86,922,916.20 is: 130,445,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,855,889.80 : 302,925,552.30 = 86,922,916.20 : x
  2. Step 2: Convert to fraction form
    201,855,889.80/302,925,552.30 = 86,922,916.20/x
  3. Step 3: Cross multiply
    201,855,889.80x = 302,925,552.30 × 86,922,916.20
  4. Step 4: Simplify right side
    201,855,889.80x = 26,331,172,397,411,620
  5. Step 5: Solve for x
    x = 26,331,172,397,411,620/201,855,889.80
  6. Step 6: Final answer
    x = 130,445,400.55

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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.