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Finding the Fourth Proportional to 689,714.16, 951,805.44 and 383,810.22

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Solution

The fourth proportional to 689,714.16, 951,805.44 and 383,810.22 is: 529,658.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,714.16 : 951,805.44 = 383,810.22 : x
  2. Step 2: Convert to fraction form
    689,714.16/951,805.44 = 383,810.22/x
  3. Step 3: Cross multiply
    689,714.16x = 951,805.44 × 383,810.22
  4. Step 4: Simplify right side
    689,714.16x = 365,312,655,323.60
  5. Step 5: Solve for x
    x = 365,312,655,323.60/689,714.16
  6. Step 6: Final answer
    x = 529,658.05

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.