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Finding the Fourth Proportional to 861,000, 1,188,190.88 and 473,859.98

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Solution

The fourth proportional to 861,000, 1,188,190.88 and 473,859.98 is: 653,932.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,000 : 1,188,190.88 = 473,859.98 : x
  2. Step 2: Convert to fraction form
    861,000/1,188,190.88 = 473,859.98/x
  3. Step 3: Cross multiply
    861,000x = 1,188,190.88 × 473,859.98
  4. Step 4: Simplify right side
    861,000x = 563,036,106,632.98
  5. Step 5: Solve for x
    x = 563,036,106,632.98/861,000
  6. Step 6: Final answer
    x = 653,932.76

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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.