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Finding the Fourth Proportional to 478,018.92, 717,065.10 and 123,036.42

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Solution

The fourth proportional to 478,018.92, 717,065.10 and 123,036.42 is: 184,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,018.92 : 717,065.10 = 123,036.42 : x
  2. Step 2: Convert to fraction form
    478,018.92/717,065.10 = 123,036.42/x
  3. Step 3: Cross multiply
    478,018.92x = 717,065.10 × 123,036.42
  4. Step 4: Simplify right side
    478,018.92x = 88,225,122,810.94
  5. Step 5: Solve for x
    x = 88,225,122,810.94/478,018.92
  6. Step 6: Final answer
    x = 184,564.08

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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.