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Finding the Fourth Proportional to 242,718.30, 363,931.65 and 124,620.30

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Solution

The fourth proportional to 242,718.30, 363,931.65 and 124,620.30 is: 186,855.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,718.30 : 363,931.65 = 124,620.30 : x
  2. Step 2: Convert to fraction form
    242,718.30/363,931.65 = 124,620.30/x
  3. Step 3: Cross multiply
    242,718.30x = 363,931.65 × 124,620.30
  4. Step 4: Simplify right side
    242,718.30x = 45,353,271,402.50
  5. Step 5: Solve for x
    x = 45,353,271,402.50/242,718.30
  6. Step 6: Final answer
    x = 186,855.59

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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.