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Finding the Fourth Proportional to 7,789,714.80, 11,684,572.20 and 4,430,482.80

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Solution

The fourth proportional to 7,789,714.80, 11,684,572.20 and 4,430,482.80 is: 6,645,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789,714.80 : 11,684,572.20 = 4,430,482.80 : x
  2. Step 2: Convert to fraction form
    7,789,714.80/11,684,572.20 = 4,430,482.80/x
  3. Step 3: Cross multiply
    7,789,714.80x = 11,684,572.20 × 4,430,482.80
  4. Step 4: Simplify right side
    7,789,714.80x = 51,768,296,157,458.16
  5. Step 5: Solve for x
    x = 51,768,296,157,458.16/7,789,714.80
  6. Step 6: Final answer
    x = 6,645,724.20

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Double scale
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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.