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Finding the Fourth Proportional to 14,862,139.60, 20,781,801.20 and 14,862,139.60

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Solution

The fourth proportional to 14,862,139.60, 20,781,801.20 and 14,862,139.60 is: 20,781,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,862,139.60 : 20,781,801.20 = 14,862,139.60 : x
  2. Step 2: Convert to fraction form
    14,862,139.60/20,781,801.20 = 14,862,139.60/x
  3. Step 3: Cross multiply
    14,862,139.60x = 20,781,801.20 × 14,862,139.60
  4. Step 4: Simplify right side
    14,862,139.60x = 308,862,030,573,847.50
  5. Step 5: Solve for x
    x = 308,862,030,573,847.50/14,862,139.60
  6. Step 6: Final answer
    x = 20,781,801.20

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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.