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Finding the Fourth Proportional to 201,582,406.40, 302,429,596.80 and 86,622,022.40

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Solution

The fourth proportional to 201,582,406.40, 302,429,596.80 and 86,622,022.40 is: 129,957,091.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,582,406.40 : 302,429,596.80 = 86,622,022.40 : x
  2. Step 2: Convert to fraction form
    201,582,406.40/302,429,596.80 = 86,622,022.40/x
  3. Step 3: Cross multiply
    201,582,406.40x = 302,429,596.80 × 86,622,022.40
  4. Step 4: Simplify right side
    201,582,406.40x = 26,197,063,308,432,572
  5. Step 5: Solve for x
    x = 26,197,063,308,432,572/201,582,406.40
  6. Step 6: Final answer
    x = 129,957,091.87

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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.