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Finding the Fourth Proportional to 18,794,543.40, 28,191,815.10 and 14,011,574.40

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Solution

The fourth proportional to 18,794,543.40, 28,191,815.10 and 14,011,574.40 is: 21,017,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794,543.40 : 28,191,815.10 = 14,011,574.40 : x
  2. Step 2: Convert to fraction form
    18,794,543.40/28,191,815.10 = 14,011,574.40/x
  3. Step 3: Cross multiply
    18,794,543.40x = 28,191,815.10 × 14,011,574.40
  4. Step 4: Simplify right side
    18,794,543.40x = 395,011,714,744,693.50
  5. Step 5: Solve for x
    x = 395,011,714,744,693.50/18,794,543.40
  6. Step 6: Final answer
    x = 21,017,361.60

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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.