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Finding the Fourth Proportional to 13,762,454.20, 20,643,025.20 and 4,663,659.40

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Solution

The fourth proportional to 13,762,454.20, 20,643,025.20 and 4,663,659.40 is: 6,995,266.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762,454.20 : 20,643,025.20 = 4,663,659.40 : x
  2. Step 2: Convert to fraction form
    13,762,454.20/20,643,025.20 = 4,663,659.40/x
  3. Step 3: Cross multiply
    13,762,454.20x = 20,643,025.20 × 4,663,659.40
  4. Step 4: Simplify right side
    13,762,454.20x = 96,272,038,518,416.89
  5. Step 5: Solve for x
    x = 96,272,038,518,416.89/13,762,454.20
  6. Step 6: Final answer
    x = 6,995,266.77

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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.