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Finding the Fourth Proportional to 470,909.13, 706,807.64 and 171,678.93

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Solution

The fourth proportional to 470,909.13, 706,807.64 and 171,678.93 is: 257,680.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,909.13 : 706,807.64 = 171,678.93 : x
  2. Step 2: Convert to fraction form
    470,909.13/706,807.64 = 171,678.93/x
  3. Step 3: Cross multiply
    470,909.13x = 706,807.64 × 171,678.93
  4. Step 4: Simplify right side
    470,909.13x = 121,343,979,351.03
  5. Step 5: Solve for x
    x = 121,343,979,351.03/470,909.13
  6. Step 6: Final answer
    x = 257,680.24

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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.