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Finding the Fourth Proportional to 470,830.70, 706,246.05 and 115,840.10

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Solution

The fourth proportional to 470,830.70, 706,246.05 and 115,840.10 is: 173,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,830.70 : 706,246.05 = 115,840.10 : x
  2. Step 2: Convert to fraction form
    470,830.70/706,246.05 = 115,840.10/x
  3. Step 3: Cross multiply
    470,830.70x = 706,246.05 × 115,840.10
  4. Step 4: Simplify right side
    470,830.70x = 81,811,613,056.61
  5. Step 5: Solve for x
    x = 81,811,613,056.61/470,830.70
  6. Step 6: Final answer
    x = 173,760.15

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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.