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Finding the Fourth Proportional to 13,795,813.80, 20,695,907.70 and 4,698,768.60

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Solution

The fourth proportional to 13,795,813.80, 20,695,907.70 and 4,698,768.60 is: 7,048,897.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,795,813.80 : 20,695,907.70 = 4,698,768.60 : x
  2. Step 2: Convert to fraction form
    13,795,813.80/20,695,907.70 = 4,698,768.60/x
  3. Step 3: Cross multiply
    13,795,813.80x = 20,695,907.70 × 4,698,768.60
  4. Step 4: Simplify right side
    13,795,813.80x = 97,245,281,249,258.20
  5. Step 5: Solve for x
    x = 97,245,281,249,258.20/13,795,813.80
  6. Step 6: Final answer
    x = 7,048,897.78

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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.