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Finding the Fourth Proportional to 28,225.52, 42,339.93 and 9,503.99

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Solution

The fourth proportional to 28,225.52, 42,339.93 and 9,503.99 is: 14,256.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.52 : 42,339.93 = 9,503.99 : x
  2. Step 2: Convert to fraction form
    28,225.52/42,339.93 = 9,503.99/x
  3. Step 3: Cross multiply
    28,225.52x = 42,339.93 × 9,503.99
  4. Step 4: Simplify right side
    28,225.52x = 402,398,271.32
  5. Step 5: Solve for x
    x = 402,398,271.32/28,225.52
  6. Step 6: Final answer
    x = 14,256.54

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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.