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Finding the Fourth Proportional to 641,006.61, 884,534 and 354,454.93

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Solution

The fourth proportional to 641,006.61, 884,534 and 354,454.93 is: 489,117.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,006.61 : 884,534 = 354,454.93 : x
  2. Step 2: Convert to fraction form
    641,006.61/884,534 = 354,454.93/x
  3. Step 3: Cross multiply
    641,006.61x = 884,534 × 354,454.93
  4. Step 4: Simplify right side
    641,006.61x = 313,527,437,052.62
  5. Step 5: Solve for x
    x = 313,527,437,052.62/641,006.61
  6. Step 6: Final answer
    x = 489,117.32

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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.