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Finding the Fourth Proportional to 384,792.60, 577,188.90 and 313,933.80

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Solution

The fourth proportional to 384,792.60, 577,188.90 and 313,933.80 is: 470,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,792.60 : 577,188.90 = 313,933.80 : x
  2. Step 2: Convert to fraction form
    384,792.60/577,188.90 = 313,933.80/x
  3. Step 3: Cross multiply
    384,792.60x = 577,188.90 × 313,933.80
  4. Step 4: Simplify right side
    384,792.60x = 181,199,104,694.82
  5. Step 5: Solve for x
    x = 181,199,104,694.82/384,792.60
  6. Step 6: Final answer
    x = 470,900.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.