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Finding the Fourth Proportional to 518,670.06, 715,777.34 and 289,225.11

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Solution

The fourth proportional to 518,670.06, 715,777.34 and 289,225.11 is: 399,137.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,670.06 : 715,777.34 = 289,225.11 : x
  2. Step 2: Convert to fraction form
    518,670.06/715,777.34 = 289,225.11/x
  3. Step 3: Cross multiply
    518,670.06x = 715,777.34 × 289,225.11
  4. Step 4: Simplify right side
    518,670.06x = 207,020,779,897.01
  5. Step 5: Solve for x
    x = 207,020,779,897.01/518,670.06
  6. Step 6: Final answer
    x = 399,137.71

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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.