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Finding the Fourth Proportional to 20,007,017.70, 28,085,407.50 and 20,007,017.70

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Solution

The fourth proportional to 20,007,017.70, 28,085,407.50 and 20,007,017.70 is: 28,085,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007,017.70 : 28,085,407.50 = 20,007,017.70 : x
  2. Step 2: Convert to fraction form
    20,007,017.70/28,085,407.50 = 20,007,017.70/x
  3. Step 3: Cross multiply
    20,007,017.70x = 28,085,407.50 × 20,007,017.70
  4. Step 4: Simplify right side
    20,007,017.70x = 561,905,244,964,212.75
  5. Step 5: Solve for x
    x = 561,905,244,964,212.75/20,007,017.70
  6. Step 6: Final answer
    x = 28,085,407.50

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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.