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Finding the Fourth Proportional to 716,687.19, 989,051.50 and 410,821.46

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Solution

The fourth proportional to 716,687.19, 989,051.50 and 410,821.46 is: 566,946.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,687.19 : 989,051.50 = 410,821.46 : x
  2. Step 2: Convert to fraction form
    716,687.19/989,051.50 = 410,821.46/x
  3. Step 3: Cross multiply
    716,687.19x = 989,051.50 × 410,821.46
  4. Step 4: Simplify right side
    716,687.19x = 406,323,578,553.83
  5. Step 5: Solve for x
    x = 406,323,578,553.83/716,687.19
  6. Step 6: Final answer
    x = 566,946.90

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Double scale
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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.