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Finding the Fourth Proportional to 190,817.70, 286,259.54 and 64,458.87

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Solution

The fourth proportional to 190,817.70, 286,259.54 and 64,458.87 is: 96,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,817.70 : 286,259.54 = 64,458.87 : x
  2. Step 2: Convert to fraction form
    190,817.70/286,259.54 = 64,458.87/x
  3. Step 3: Cross multiply
    190,817.70x = 286,259.54 × 64,458.87
  4. Step 4: Simplify right side
    190,817.70x = 18,451,966,475.12
  5. Step 5: Solve for x
    x = 18,451,966,475.12/190,817.70
  6. Step 6: Final answer
    x = 96,699.45

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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.