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Finding the Fourth Proportional to 505,444.72, 697,495.44 and 279,085.36

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Solution

The fourth proportional to 505,444.72, 697,495.44 and 279,085.36 is: 385,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,444.72 : 697,495.44 = 279,085.36 : x
  2. Step 2: Convert to fraction form
    505,444.72/697,495.44 = 279,085.36/x
  3. Step 3: Cross multiply
    505,444.72x = 697,495.44 × 279,085.36
  4. Step 4: Simplify right side
    505,444.72x = 194,660,765,970.76
  5. Step 5: Solve for x
    x = 194,660,765,970.76/505,444.72
  6. Step 6: Final answer
    x = 385,127.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.