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Finding the Fourth Proportional to 651,441.60, 977,392.80 and 628,401.60

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Solution

The fourth proportional to 651,441.60, 977,392.80 and 628,401.60 is: 942,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,441.60 : 977,392.80 = 628,401.60 : x
  2. Step 2: Convert to fraction form
    651,441.60/977,392.80 = 628,401.60/x
  3. Step 3: Cross multiply
    651,441.60x = 977,392.80 × 628,401.60
  4. Step 4: Simplify right side
    651,441.60x = 614,195,199,348.48
  5. Step 5: Solve for x
    x = 614,195,199,348.48/651,441.60
  6. Step 6: Final answer
    x = 942,824.65

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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.