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Finding the Fourth Proportional to 283,636.84, 391,421.52 and 156,317.08

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Solution

The fourth proportional to 283,636.84, 391,421.52 and 156,317.08 is: 215,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,636.84 : 391,421.52 = 156,317.08 : x
  2. Step 2: Convert to fraction form
    283,636.84/391,421.52 = 156,317.08/x
  3. Step 3: Cross multiply
    283,636.84x = 391,421.52 × 156,317.08
  4. Step 4: Simplify right side
    283,636.84x = 61,185,869,055.56
  5. Step 5: Solve for x
    x = 61,185,869,055.56/283,636.84
  6. Step 6: Final answer
    x = 215,719.05

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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.