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Finding the Fourth Proportional to 712,662.09, 983,100.81 and 440,643.03

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Solution

The fourth proportional to 712,662.09, 983,100.81 and 440,643.03 is: 607,856.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,662.09 : 983,100.81 = 440,643.03 : x
  2. Step 2: Convert to fraction form
    712,662.09/983,100.81 = 440,643.03/x
  3. Step 3: Cross multiply
    712,662.09x = 983,100.81 × 440,643.03
  4. Step 4: Simplify right side
    712,662.09x = 433,196,519,713.85
  5. Step 5: Solve for x
    x = 433,196,519,713.85/712,662.09
  6. Step 6: Final answer
    x = 607,856.83

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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.