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Finding the Fourth Proportional to 19,319,233.80, 28,978,850.70 and 10,361,281.80

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Solution

The fourth proportional to 19,319,233.80, 28,978,850.70 and 10,361,281.80 is: 15,541,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319,233.80 : 28,978,850.70 = 10,361,281.80 : x
  2. Step 2: Convert to fraction form
    19,319,233.80/28,978,850.70 = 10,361,281.80/x
  3. Step 3: Cross multiply
    19,319,233.80x = 28,978,850.70 × 10,361,281.80
  4. Step 4: Simplify right side
    19,319,233.80x = 300,258,038,342,827.25
  5. Step 5: Solve for x
    x = 300,258,038,342,827.25/19,319,233.80
  6. Step 6: Final answer
    x = 15,541,922.70

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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.