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Finding the Fourth Proportional to 386,798.52, 533,645.10 and 252,740.28

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Solution

The fourth proportional to 386,798.52, 533,645.10 and 252,740.28 is: 348,692.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,798.52 : 533,645.10 = 252,740.28 : x
  2. Step 2: Convert to fraction form
    386,798.52/533,645.10 = 252,740.28/x
  3. Step 3: Cross multiply
    386,798.52x = 533,645.10 × 252,740.28
  4. Step 4: Simplify right side
    386,798.52x = 134,873,611,994.63
  5. Step 5: Solve for x
    x = 134,873,611,994.63/386,798.52
  6. Step 6: Final answer
    x = 348,692.16

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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.