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Finding the Fourth Proportional to 406,688.16, 610,036.38 and 107,211.72

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Solution

The fourth proportional to 406,688.16, 610,036.38 and 107,211.72 is: 160,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,688.16 : 610,036.38 = 107,211.72 : x
  2. Step 2: Convert to fraction form
    406,688.16/610,036.38 = 107,211.72/x
  3. Step 3: Cross multiply
    406,688.16x = 610,036.38 × 107,211.72
  4. Step 4: Simplify right side
    406,688.16x = 65,403,049,562.37
  5. Step 5: Solve for x
    x = 65,403,049,562.37/406,688.16
  6. Step 6: Final answer
    x = 160,818.67

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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.