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Finding the Fourth Proportional to 549,815.70, 770,847.90 and 549,815.70

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Solution

The fourth proportional to 549,815.70, 770,847.90 and 549,815.70 is: 770,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,815.70 : 770,847.90 = 549,815.70 : x
  2. Step 2: Convert to fraction form
    549,815.70/770,847.90 = 549,815.70/x
  3. Step 3: Cross multiply
    549,815.70x = 770,847.90 × 549,815.70
  4. Step 4: Simplify right side
    549,815.70x = 423,824,277,732.03
  5. Step 5: Solve for x
    x = 423,824,277,732.03/549,815.70
  6. Step 6: Final answer
    x = 770,847.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.