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Finding the Fourth Proportional to 528,641.39, 792,955.21 and 129,285.62

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Solution

The fourth proportional to 528,641.39, 792,955.21 and 129,285.62 is: 193,926.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,641.39 : 792,955.21 = 129,285.62 : x
  2. Step 2: Convert to fraction form
    528,641.39/792,955.21 = 129,285.62/x
  3. Step 3: Cross multiply
    528,641.39x = 792,955.21 × 129,285.62
  4. Step 4: Simplify right side
    528,641.39x = 102,517,701,345.88
  5. Step 5: Solve for x
    x = 102,517,701,345.88/528,641.39
  6. Step 6: Final answer
    x = 193,926.74

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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.