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Finding the Fourth Proportional to 641,294.08, 885,011.92 and 354,809.52

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Solution

The fourth proportional to 641,294.08, 885,011.92 and 354,809.52 is: 489,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,294.08 : 885,011.92 = 354,809.52 : x
  2. Step 2: Convert to fraction form
    641,294.08/885,011.92 = 354,809.52/x
  3. Step 3: Cross multiply
    641,294.08x = 885,011.92 × 354,809.52
  4. Step 4: Simplify right side
    641,294.08x = 314,010,654,529.48
  5. Step 5: Solve for x
    x = 314,010,654,529.48/641,294.08
  6. Step 6: Final answer
    x = 489,651.57

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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.