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Finding the Fourth Proportional to 651,559.74, 977,389.56 and 219,279.30

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Solution

The fourth proportional to 651,559.74, 977,389.56 and 219,279.30 is: 328,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,559.74 : 977,389.56 = 219,279.30 : x
  2. Step 2: Convert to fraction form
    651,559.74/977,389.56 = 219,279.30/x
  3. Step 3: Cross multiply
    651,559.74x = 977,389.56 × 219,279.30
  4. Step 4: Simplify right side
    651,559.74x = 214,321,298,544.11
  5. Step 5: Solve for x
    x = 214,321,298,544.11/651,559.74
  6. Step 6: Final answer
    x = 328,935.76

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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.