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Finding the Fourth Proportional to 608,532.80, 839,495.88 and 393,742.88

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Solution

The fourth proportional to 608,532.80, 839,495.88 and 393,742.88 is: 543,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,532.80 : 839,495.88 = 393,742.88 : x
  2. Step 2: Convert to fraction form
    608,532.80/839,495.88 = 393,742.88/x
  3. Step 3: Cross multiply
    608,532.80x = 839,495.88 × 393,742.88
  4. Step 4: Simplify right side
    608,532.80x = 330,545,525,539.33
  5. Step 5: Solve for x
    x = 330,545,525,539.33/608,532.80
  6. Step 6: Final answer
    x = 543,184.40

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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.