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Finding the Fourth Proportional to 634,778.78, 876,010.01 and 348,298.64

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Solution

The fourth proportional to 634,778.78, 876,010.01 and 348,298.64 is: 480,660.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,778.78 : 876,010.01 = 348,298.64 : x
  2. Step 2: Convert to fraction form
    634,778.78/876,010.01 = 348,298.64/x
  3. Step 3: Cross multiply
    634,778.78x = 876,010.01 × 348,298.64
  4. Step 4: Simplify right side
    634,778.78x = 305,113,095,109.39
  5. Step 5: Solve for x
    x = 305,113,095,109.39/634,778.78
  6. Step 6: Final answer
    x = 480,660.51

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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.