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Finding the Fourth Proportional to 427,030.68, 640,774.44 and 277,235.76

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Solution

The fourth proportional to 427,030.68, 640,774.44 and 277,235.76 is: 416,001.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,030.68 : 640,774.44 = 277,235.76 : x
  2. Step 2: Convert to fraction form
    427,030.68/640,774.44 = 277,235.76/x
  3. Step 3: Cross multiply
    427,030.68x = 640,774.44 × 277,235.76
  4. Step 4: Simplify right side
    427,030.68x = 177,645,588,861.97
  5. Step 5: Solve for x
    x = 177,645,588,861.97/427,030.68
  6. Step 6: Final answer
    x = 416,001.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.