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Finding the Fourth Proportional to 622,810.60, 934,215.90 and 611,000.80

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Solution

The fourth proportional to 622,810.60, 934,215.90 and 611,000.80 is: 916,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,810.60 : 934,215.90 = 611,000.80 : x
  2. Step 2: Convert to fraction form
    622,810.60/934,215.90 = 611,000.80/x
  3. Step 3: Cross multiply
    622,810.60x = 934,215.90 × 611,000.80
  4. Step 4: Simplify right side
    622,810.60x = 570,806,662,272.72
  5. Step 5: Solve for x
    x = 570,806,662,272.72/622,810.60
  6. Step 6: Final answer
    x = 916,501.20

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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.