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Finding the Fourth Proportional to 309,594.17, 427,286.66 and 188,805.53

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Solution

The fourth proportional to 309,594.17, 427,286.66 and 188,805.53 is: 260,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,594.17 : 427,286.66 = 188,805.53 : x
  2. Step 2: Convert to fraction form
    309,594.17/427,286.66 = 188,805.53/x
  3. Step 3: Cross multiply
    309,594.17x = 427,286.66 × 188,805.53
  4. Step 4: Simplify right side
    309,594.17x = 80,674,084,303.23
  5. Step 5: Solve for x
    x = 80,674,084,303.23/309,594.17
  6. Step 6: Final answer
    x = 260,580.11

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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.