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Finding the Fourth Proportional to 504,827.78, 696,919.41 and 389,848.28

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Solution

The fourth proportional to 504,827.78, 696,919.41 and 389,848.28 is: 538,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,827.78 : 696,919.41 = 389,848.28 : x
  2. Step 2: Convert to fraction form
    504,827.78/696,919.41 = 389,848.28/x
  3. Step 3: Cross multiply
    504,827.78x = 696,919.41 × 389,848.28
  4. Step 4: Simplify right side
    504,827.78x = 271,692,829,802.52
  5. Step 5: Solve for x
    x = 271,692,829,802.52/504,827.78
  6. Step 6: Final answer
    x = 538,189.15

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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.