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Finding the Fourth Proportional to 520,683.77, 718,610.16 and 291,253.80

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Solution

The fourth proportional to 520,683.77, 718,610.16 and 291,253.80 is: 401,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,683.77 : 718,610.16 = 291,253.80 : x
  2. Step 2: Convert to fraction form
    520,683.77/718,610.16 = 291,253.80/x
  3. Step 3: Cross multiply
    520,683.77x = 718,610.16 × 291,253.80
  4. Step 4: Simplify right side
    520,683.77x = 209,297,939,818.61
  5. Step 5: Solve for x
    x = 209,297,939,818.61/520,683.77
  6. Step 6: Final answer
    x = 401,967.47

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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.