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Finding the Fourth Proportional to 556,611.49, 768,123.96 and 314,889.07

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Solution

The fourth proportional to 556,611.49, 768,123.96 and 314,889.07 is: 434,546.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,611.49 : 768,123.96 = 314,889.07 : x
  2. Step 2: Convert to fraction form
    556,611.49/768,123.96 = 314,889.07/x
  3. Step 3: Cross multiply
    556,611.49x = 768,123.96 × 314,889.07
  4. Step 4: Simplify right side
    556,611.49x = 241,873,839,409.12
  5. Step 5: Solve for x
    x = 241,873,839,409.12/556,611.49
  6. Step 6: Final answer
    x = 434,546.98

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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.