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Finding the Fourth Proportional to 520,966.88, 718,964.42 and 291,522.16

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Solution

The fourth proportional to 520,966.88, 718,964.42 and 291,522.16 is: 402,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,966.88 : 718,964.42 = 291,522.16 : x
  2. Step 2: Convert to fraction form
    520,966.88/718,964.42 = 291,522.16/x
  3. Step 3: Cross multiply
    520,966.88x = 718,964.42 × 291,522.16
  4. Step 4: Simplify right side
    520,966.88x = 209,594,062,855.66
  5. Step 5: Solve for x
    x = 209,594,062,855.66/520,966.88
  6. Step 6: Final answer
    x = 402,317.44

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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.