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Finding the Fourth Proportional to 630,430.09, 869,992.54 and 343,950.21

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Solution

The fourth proportional to 630,430.09, 869,992.54 and 343,950.21 is: 474,650.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,430.09 : 869,992.54 = 343,950.21 : x
  2. Step 2: Convert to fraction form
    630,430.09/869,992.54 = 343,950.21/x
  3. Step 3: Cross multiply
    630,430.09x = 869,992.54 × 343,950.21
  4. Step 4: Simplify right side
    630,430.09x = 299,234,112,543.12
  5. Step 5: Solve for x
    x = 299,234,112,543.12/630,430.09
  6. Step 6: Final answer
    x = 474,650.74

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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.