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Finding the Fourth Proportional to 262,647.60, 393,971.40 and 157,412.40

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Solution

The fourth proportional to 262,647.60, 393,971.40 and 157,412.40 is: 236,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,647.60 : 393,971.40 = 157,412.40 : x
  2. Step 2: Convert to fraction form
    262,647.60/393,971.40 = 157,412.40/x
  3. Step 3: Cross multiply
    262,647.60x = 393,971.40 × 157,412.40
  4. Step 4: Simplify right side
    262,647.60x = 62,015,983,605.36
  5. Step 5: Solve for x
    x = 62,015,983,605.36/262,647.60
  6. Step 6: Final answer
    x = 236,118.60

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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.