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Finding the Fourth Proportional to 9,905,963.55, 13,840,005.45 and 9,905,963.55

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Solution

The fourth proportional to 9,905,963.55, 13,840,005.45 and 9,905,963.55 is: 13,840,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905,963.55 : 13,840,005.45 = 9,905,963.55 : x
  2. Step 2: Convert to fraction form
    9,905,963.55/13,840,005.45 = 9,905,963.55/x
  3. Step 3: Cross multiply
    9,905,963.55x = 13,840,005.45 × 9,905,963.55
  4. Step 4: Simplify right side
    9,905,963.55x = 137,098,589,519,501.34
  5. Step 5: Solve for x
    x = 137,098,589,519,501.34/9,905,963.55
  6. Step 6: Final answer
    x = 13,840,005.45

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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.