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Finding the Fourth Proportional to 10,369,871.70, 15,554,807.55 and 3,638,966.10

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Solution

The fourth proportional to 10,369,871.70, 15,554,807.55 and 3,638,966.10 is: 5,458,449.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369,871.70 : 15,554,807.55 = 3,638,966.10 : x
  2. Step 2: Convert to fraction form
    10,369,871.70/15,554,807.55 = 3,638,966.10/x
  3. Step 3: Cross multiply
    10,369,871.70x = 15,554,807.55 × 3,638,966.10
  4. Step 4: Simplify right side
    10,369,871.70x = 56,603,417,366,474.06
  5. Step 5: Solve for x
    x = 56,603,417,366,474.06/10,369,871.70
  6. Step 6: Final answer
    x = 5,458,449.15

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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.