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Finding the Fourth Proportional to 280,924.39, 387,675.61 and 153,599.95

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Solution

The fourth proportional to 280,924.39, 387,675.61 and 153,599.95 is: 211,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,924.39 : 387,675.61 = 153,599.95 : x
  2. Step 2: Convert to fraction form
    280,924.39/387,675.61 = 153,599.95/x
  3. Step 3: Cross multiply
    280,924.39x = 387,675.61 × 153,599.95
  4. Step 4: Simplify right side
    280,924.39x = 59,546,954,312.22
  5. Step 5: Solve for x
    x = 59,546,954,312.22/280,924.39
  6. Step 6: Final answer
    x = 211,967.90

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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.