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Finding the Fourth Proportional to 236,356.95, 354,322.19 and 86,492.78

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Solution

The fourth proportional to 236,356.95, 354,322.19 and 86,492.78 is: 129,661.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,356.95 : 354,322.19 = 86,492.78 : x
  2. Step 2: Convert to fraction form
    236,356.95/354,322.19 = 86,492.78/x
  3. Step 3: Cross multiply
    236,356.95x = 354,322.19 × 86,492.78
  4. Step 4: Simplify right side
    236,356.95x = 30,646,309,024.71
  5. Step 5: Solve for x
    x = 30,646,309,024.71/236,356.95
  6. Step 6: Final answer
    x = 129,661.13

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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.