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Finding the Fourth Proportional to 891,889.14, 1,230,807.86 and 509,923.92

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Solution

The fourth proportional to 891,889.14, 1,230,807.86 and 509,923.92 is: 703,695.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,889.14 : 1,230,807.86 = 509,923.92 : x
  2. Step 2: Convert to fraction form
    891,889.14/1,230,807.86 = 509,923.92/x
  3. Step 3: Cross multiply
    891,889.14x = 1,230,807.86 × 509,923.92
  4. Step 4: Simplify right side
    891,889.14x = 627,618,366,188.39
  5. Step 5: Solve for x
    x = 627,618,366,188.39/891,889.14
  6. Step 6: Final answer
    x = 703,695.49

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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.