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Finding the Fourth Proportional to 638,725.71, 957,925.08 and 189,341.52

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Solution

The fourth proportional to 638,725.71, 957,925.08 and 189,341.52 is: 283,963.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,725.71 : 957,925.08 = 189,341.52 : x
  2. Step 2: Convert to fraction form
    638,725.71/957,925.08 = 189,341.52/x
  3. Step 3: Cross multiply
    638,725.71x = 957,925.08 × 189,341.52
  4. Step 4: Simplify right side
    638,725.71x = 181,374,990,693.32
  5. Step 5: Solve for x
    x = 181,374,990,693.32/638,725.71
  6. Step 6: Final answer
    x = 283,963.82

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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.