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Finding the Fourth Proportional to 361,919.36, 542,526.06 and 172,328.80

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Solution

The fourth proportional to 361,919.36, 542,526.06 and 172,328.80 is: 258,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,919.36 : 542,526.06 = 172,328.80 : x
  2. Step 2: Convert to fraction form
    361,919.36/542,526.06 = 172,328.80/x
  3. Step 3: Cross multiply
    361,919.36x = 542,526.06 × 172,328.80
  4. Step 4: Simplify right side
    361,919.36x = 93,492,864,888.53
  5. Step 5: Solve for x
    x = 93,492,864,888.53/361,919.36
  6. Step 6: Final answer
    x = 258,325.13

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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.