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Finding the Fourth Proportional to 621,214.40, 931,821.60 and 617,277.80

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Solution

The fourth proportional to 621,214.40, 931,821.60 and 617,277.80 is: 925,916.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,214.40 : 931,821.60 = 617,277.80 : x
  2. Step 2: Convert to fraction form
    621,214.40/931,821.60 = 617,277.80/x
  3. Step 3: Cross multiply
    621,214.40x = 931,821.60 × 617,277.80
  4. Step 4: Simplify right side
    621,214.40x = 575,192,787,240.48
  5. Step 5: Solve for x
    x = 575,192,787,240.48/621,214.40
  6. Step 6: Final answer
    x = 925,916.70

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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.