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Finding the Fourth Proportional to 316,574.59, 474,817.93 and 79,903.12

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Solution

The fourth proportional to 316,574.59, 474,817.93 and 79,903.12 is: 119,843.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,574.59 : 474,817.93 = 79,903.12 : x
  2. Step 2: Convert to fraction form
    316,574.59/474,817.93 = 79,903.12/x
  3. Step 3: Cross multiply
    316,574.59x = 474,817.93 × 79,903.12
  4. Step 4: Simplify right side
    316,574.59x = 37,939,434,038.94
  5. Step 5: Solve for x
    x = 37,939,434,038.94/316,574.59
  6. Step 6: Final answer
    x = 119,843.59

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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.