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Finding the Fourth Proportional to 283,785.49, 391,626.63 and 156,465.64

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Solution

The fourth proportional to 283,785.49, 391,626.63 and 156,465.64 is: 215,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,785.49 : 391,626.63 = 156,465.64 : x
  2. Step 2: Convert to fraction form
    283,785.49/391,626.63 = 156,465.64/x
  3. Step 3: Cross multiply
    283,785.49x = 391,626.63 × 156,465.64
  4. Step 4: Simplify right side
    283,785.49x = 61,276,111,303.99
  5. Step 5: Solve for x
    x = 61,276,111,303.99/283,785.49
  6. Step 6: Final answer
    x = 215,924.05

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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.