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Finding the Fourth Proportional to 283,358.94, 391,033.40 and 156,033.50

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Solution

The fourth proportional to 283,358.94, 391,033.40 and 156,033.50 is: 215,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,358.94 : 391,033.40 = 156,033.50 : x
  2. Step 2: Convert to fraction form
    283,358.94/391,033.40 = 156,033.50/x
  3. Step 3: Cross multiply
    283,358.94x = 391,033.40 × 156,033.50
  4. Step 4: Simplify right side
    283,358.94x = 61,014,310,018.90
  5. Step 5: Solve for x
    x = 61,014,310,018.90/283,358.94
  6. Step 6: Final answer
    x = 215,325.16

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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.