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Finding the Fourth Proportional to 621,101.34, 857,060.76 and 363,038.78

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Solution

The fourth proportional to 621,101.34, 857,060.76 and 363,038.78 is: 500,958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,101.34 : 857,060.76 = 363,038.78 : x
  2. Step 2: Convert to fraction form
    621,101.34/857,060.76 = 363,038.78/x
  3. Step 3: Cross multiply
    621,101.34x = 857,060.76 × 363,038.78
  4. Step 4: Simplify right side
    621,101.34x = 311,146,292,696.27
  5. Step 5: Solve for x
    x = 311,146,292,696.27/621,101.34
  6. Step 6: Final answer
    x = 500,958.98

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Double scale
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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.