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Finding the Fourth Proportional to 16,655,603.40, 24,983,405.10 and 12,871,801.80

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Solution

The fourth proportional to 16,655,603.40, 24,983,405.10 and 12,871,801.80 is: 19,307,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,655,603.40 : 24,983,405.10 = 12,871,801.80 : x
  2. Step 2: Convert to fraction form
    16,655,603.40/24,983,405.10 = 12,871,801.80/x
  3. Step 3: Cross multiply
    16,655,603.40x = 24,983,405.10 × 12,871,801.80
  4. Step 4: Simplify right side
    16,655,603.40x = 321,581,438,736,309.19
  5. Step 5: Solve for x
    x = 321,581,438,736,309.19/16,655,603.40
  6. Step 6: Final answer
    x = 19,307,702.70

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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.