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Finding the Fourth Proportional to 14,698,480.80, 21,997,954.80 and 12,906,890.40

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Solution

The fourth proportional to 14,698,480.80, 21,997,954.80 and 12,906,890.40 is: 19,316,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,698,480.80 : 21,997,954.80 = 12,906,890.40 : x
  2. Step 2: Convert to fraction form
    14,698,480.80/21,997,954.80 = 12,906,890.40/x
  3. Step 3: Cross multiply
    14,698,480.80x = 21,997,954.80 × 12,906,890.40
  4. Step 4: Simplify right side
    14,698,480.80x = 283,925,191,627,753.94
  5. Step 5: Solve for x
    x = 283,925,191,627,753.94/14,698,480.80
  6. Step 6: Final answer
    x = 19,316,635.20

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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.