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Finding the Fourth Proportional to 876,314.81, 1,209,314.44 and 473,906.81

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Solution

The fourth proportional to 876,314.81, 1,209,314.44 and 473,906.81 is: 653,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,314.81 : 1,209,314.44 = 473,906.81 : x
  2. Step 2: Convert to fraction form
    876,314.81/1,209,314.44 = 473,906.81/x
  3. Step 3: Cross multiply
    876,314.81x = 1,209,314.44 × 473,906.81
  4. Step 4: Simplify right side
    876,314.81x = 573,102,352,163.01
  5. Step 5: Solve for x
    x = 573,102,352,163.01/876,314.81
  6. Step 6: Final answer
    x = 653,991.40

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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.