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Finding the Fourth Proportional to 384,556.32, 530,684.80 and 223,505.76

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Solution

The fourth proportional to 384,556.32, 530,684.80 and 223,505.76 is: 308,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,556.32 : 530,684.80 = 223,505.76 : x
  2. Step 2: Convert to fraction form
    384,556.32/530,684.80 = 223,505.76/x
  3. Step 3: Cross multiply
    384,556.32x = 530,684.80 × 223,505.76
  4. Step 4: Simplify right side
    384,556.32x = 118,611,109,544.45
  5. Step 5: Solve for x
    x = 118,611,109,544.45/384,556.32
  6. Step 6: Final answer
    x = 308,436.25

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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.