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Finding the Fourth Proportional to 19,312,827.60, 28,969,241.40 and 7,344,008.40

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Solution

The fourth proportional to 19,312,827.60, 28,969,241.40 and 7,344,008.40 is: 11,016,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312,827.60 : 28,969,241.40 = 7,344,008.40 : x
  2. Step 2: Convert to fraction form
    19,312,827.60/28,969,241.40 = 7,344,008.40/x
  3. Step 3: Cross multiply
    19,312,827.60x = 28,969,241.40 × 7,344,008.40
  4. Step 4: Simplify right side
    19,312,827.60x = 212,750,352,183,227.75
  5. Step 5: Solve for x
    x = 212,750,352,183,227.75/19,312,827.60
  6. Step 6: Final answer
    x = 11,016,012.60

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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.