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Finding the Fourth Proportional to 34,281.80, 51,413.10 and 10,915.40

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Solution

The fourth proportional to 34,281.80, 51,413.10 and 10,915.40 is: 16,370.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,281.80 : 51,413.10 = 10,915.40 : x
  2. Step 2: Convert to fraction form
    34,281.80/51,413.10 = 10,915.40/x
  3. Step 3: Cross multiply
    34,281.80x = 51,413.10 × 10,915.40
  4. Step 4: Simplify right side
    34,281.80x = 561,194,551.74
  5. Step 5: Solve for x
    x = 561,194,551.74/34,281.80
  6. Step 6: Final answer
    x = 16,370.04

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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.