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Finding the Fourth Proportional to 621,194.80, 931,792.20 and 610,697.20

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Solution

The fourth proportional to 621,194.80, 931,792.20 and 610,697.20 is: 916,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,194.80 : 931,792.20 = 610,697.20 : x
  2. Step 2: Convert to fraction form
    621,194.80/931,792.20 = 610,697.20/x
  3. Step 3: Cross multiply
    621,194.80x = 931,792.20 × 610,697.20
  4. Step 4: Simplify right side
    621,194.80x = 569,042,887,521.84
  5. Step 5: Solve for x
    x = 569,042,887,521.84/621,194.80
  6. Step 6: Final answer
    x = 916,045.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.