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Finding the Fourth Proportional to 20,220,506.55, 28,359,097.65 and 20,220,506.55

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Solution

The fourth proportional to 20,220,506.55, 28,359,097.65 and 20,220,506.55 is: 28,359,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220,506.55 : 28,359,097.65 = 20,220,506.55 : x
  2. Step 2: Convert to fraction form
    20,220,506.55/28,359,097.65 = 20,220,506.55/x
  3. Step 3: Cross multiply
    20,220,506.55x = 28,359,097.65 × 20,220,506.55
  4. Step 4: Simplify right side
    20,220,506.55x = 573,435,319,783,914.62
  5. Step 5: Solve for x
    x = 573,435,319,783,914.62/20,220,506.55
  6. Step 6: Final answer
    x = 28,359,097.65

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1.5x scale

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.