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Finding the Fourth Proportional to 201,855,783.80, 302,925,393.30 and 86,922,810.20

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Solution

The fourth proportional to 201,855,783.80, 302,925,393.30 and 86,922,810.20 is: 130,445,241.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,855,783.80 : 302,925,393.30 = 86,922,810.20 : x
  2. Step 2: Convert to fraction form
    201,855,783.80/302,925,393.30 = 86,922,810.20/x
  3. Step 3: Cross multiply
    201,855,783.80x = 302,925,393.30 × 86,922,810.20
  4. Step 4: Simplify right side
    201,855,783.80x = 26,331,126,466,576,252
  5. Step 5: Solve for x
    x = 26,331,126,466,576,252/201,855,783.80
  6. Step 6: Final answer
    x = 130,445,241.50

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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.