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Finding the Fourth Proportional to 651,810.30, 977,715.45 and 628,190.70

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Solution

The fourth proportional to 651,810.30, 977,715.45 and 628,190.70 is: 942,286.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,810.30 : 977,715.45 = 628,190.70 : x
  2. Step 2: Convert to fraction form
    651,810.30/977,715.45 = 628,190.70/x
  3. Step 3: Cross multiply
    651,810.30x = 977,715.45 × 628,190.70
  4. Step 4: Simplify right side
    651,810.30x = 614,191,752,936.32
  5. Step 5: Solve for x
    x = 614,191,752,936.32/651,810.30
  6. Step 6: Final answer
    x = 942,286.05

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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.