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Finding the Fourth Proportional to 777,643.60, 1,166,465.28 and 186,667.60

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Solution

The fourth proportional to 777,643.60, 1,166,465.28 and 186,667.60 is: 280,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,643.60 : 1,166,465.28 = 186,667.60 : x
  2. Step 2: Convert to fraction form
    777,643.60/1,166,465.28 = 186,667.60/x
  3. Step 3: Cross multiply
    777,643.60x = 1,166,465.28 × 186,667.60
  4. Step 4: Simplify right side
    777,643.60x = 217,741,274,300.93
  5. Step 5: Solve for x
    x = 217,741,274,300.93/777,643.60
  6. Step 6: Final answer
    x = 280,001.37

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1.5x scale

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.