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Finding the Fourth Proportional to 783,910.04, 1,080,636 and 611,632.76

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Solution

The fourth proportional to 783,910.04, 1,080,636 and 611,632.76 is: 843,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,910.04 : 1,080,636 = 611,632.76 : x
  2. Step 2: Convert to fraction form
    783,910.04/1,080,636 = 611,632.76/x
  3. Step 3: Cross multiply
    783,910.04x = 1,080,636 × 611,632.76
  4. Step 4: Simplify right side
    783,910.04x = 660,952,379,235.36
  5. Step 5: Solve for x
    x = 660,952,379,235.36/783,910.04
  6. Step 6: Final answer
    x = 843,148.25

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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.