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Finding the Fourth Proportional to 75,210.84, 103,788.32 and 41,218.47

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Solution

The fourth proportional to 75,210.84, 103,788.32 and 41,218.47 is: 56,880.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,210.84 : 103,788.32 = 41,218.47 : x
  2. Step 2: Convert to fraction form
    75,210.84/103,788.32 = 41,218.47/x
  3. Step 3: Cross multiply
    75,210.84x = 103,788.32 × 41,218.47
  4. Step 4: Simplify right side
    75,210.84x = 4,277,995,548.18
  5. Step 5: Solve for x
    x = 4,277,995,548.18/75,210.84
  6. Step 6: Final answer
    x = 56,880.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.