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Finding the Fourth Proportional to 190,875.99, 286,250.40 and 76,994.39

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Solution

The fourth proportional to 190,875.99, 286,250.40 and 76,994.39 is: 115,465.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,875.99 : 286,250.40 = 76,994.39 : x
  2. Step 2: Convert to fraction form
    190,875.99/286,250.40 = 76,994.39/x
  3. Step 3: Cross multiply
    190,875.99x = 286,250.40 × 76,994.39
  4. Step 4: Simplify right side
    190,875.99x = 22,039,673,504.00
  5. Step 5: Solve for x
    x = 22,039,673,504.00/190,875.99
  6. Step 6: Final answer
    x = 115,465.93

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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.