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Finding the Fourth Proportional to 712,219.79, 982,860.69 and 406,295.63

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Solution

The fourth proportional to 712,219.79, 982,860.69 and 406,295.63 is: 560,686.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,219.79 : 982,860.69 = 406,295.63 : x
  2. Step 2: Convert to fraction form
    712,219.79/982,860.69 = 406,295.63/x
  3. Step 3: Cross multiply
    712,219.79x = 982,860.69 × 406,295.63
  4. Step 4: Simplify right side
    712,219.79x = 399,332,003,245.79
  5. Step 5: Solve for x
    x = 399,332,003,245.79/712,219.79
  6. Step 6: Final answer
    x = 560,686.47

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Double scale
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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.