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Finding the Fourth Proportional to 15,660,078.30, 21,946,504.50 and 15,660,078.30

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Solution

The fourth proportional to 15,660,078.30, 21,946,504.50 and 15,660,078.30 is: 21,946,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660,078.30 : 21,946,504.50 = 15,660,078.30 : x
  2. Step 2: Convert to fraction form
    15,660,078.30/21,946,504.50 = 15,660,078.30/x
  3. Step 3: Cross multiply
    15,660,078.30x = 21,946,504.50 × 15,660,078.30
  4. Step 4: Simplify right side
    15,660,078.30x = 343,683,978,881,302.38
  5. Step 5: Solve for x
    x = 343,683,978,881,302.38/15,660,078.30
  6. Step 6: Final answer
    x = 21,946,504.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.