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Finding the Fourth Proportional to 923,693.70, 1,290,021.90 and 923,693.70

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Solution

The fourth proportional to 923,693.70, 1,290,021.90 and 923,693.70 is: 1,290,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,693.70 : 1,290,021.90 = 923,693.70 : x
  2. Step 2: Convert to fraction form
    923,693.70/1,290,021.90 = 923,693.70/x
  3. Step 3: Cross multiply
    923,693.70x = 1,290,021.90 × 923,693.70
  4. Step 4: Simplify right side
    923,693.70x = 1,191,585,101,892.03
  5. Step 5: Solve for x
    x = 1,191,585,101,892.03/923,693.70
  6. Step 6: Final answer
    x = 1,290,021.90

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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.