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Finding the Fourth Proportional to 414,890.76, 571,431.06 and 358,203.72

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Solution

The fourth proportional to 414,890.76, 571,431.06 and 358,203.72 is: 493,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,890.76 : 571,431.06 = 358,203.72 : x
  2. Step 2: Convert to fraction form
    414,890.76/571,431.06 = 358,203.72/x
  3. Step 3: Cross multiply
    414,890.76x = 571,431.06 × 358,203.72
  4. Step 4: Simplify right side
    414,890.76x = 204,688,731,415.54
  5. Step 5: Solve for x
    x = 204,688,731,415.54/414,890.76
  6. Step 6: Final answer
    x = 493,355.72

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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.