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Finding the Fourth Proportional to 712,888.75, 983,540.46 and 406,744.21

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Solution

The fourth proportional to 712,888.75, 983,540.46 and 406,744.21 is: 561,166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,888.75 : 983,540.46 = 406,744.21 : x
  2. Step 2: Convert to fraction form
    712,888.75/983,540.46 = 406,744.21/x
  3. Step 3: Cross multiply
    712,888.75x = 983,540.46 × 406,744.21
  4. Step 4: Simplify right side
    712,888.75x = 400,049,387,405.74
  5. Step 5: Solve for x
    x = 400,049,387,405.74/712,888.75
  6. Step 6: Final answer
    x = 561,166.64

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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.