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Finding the Fourth Proportional to 630,430.89, 869,993.63 and 343,951.01

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Solution

The fourth proportional to 630,430.89, 869,993.63 and 343,951.01 is: 474,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,430.89 : 869,993.63 = 343,951.01 : x
  2. Step 2: Convert to fraction form
    630,430.89/869,993.63 = 343,951.01/x
  3. Step 3: Cross multiply
    630,430.89x = 869,993.63 × 343,951.01
  4. Step 4: Simplify right side
    630,430.89x = 299,235,183,382.10
  5. Step 5: Solve for x
    x = 299,235,183,382.10/630,430.89
  6. Step 6: Final answer
    x = 474,651.84

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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.