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Finding the Fourth Proportional to 405,913.60, 569,523.20 and 405,913.60

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Solution

The fourth proportional to 405,913.60, 569,523.20 and 405,913.60 is: 569,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,913.60 : 569,523.20 = 405,913.60 : x
  2. Step 2: Convert to fraction form
    405,913.60/569,523.20 = 405,913.60/x
  3. Step 3: Cross multiply
    405,913.60x = 569,523.20 × 405,913.60
  4. Step 4: Simplify right side
    405,913.60x = 231,177,212,395.52
  5. Step 5: Solve for x
    x = 231,177,212,395.52/405,913.60
  6. Step 6: Final answer
    x = 569,523.20

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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.