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Finding the Fourth Proportional to 520,605.26, 718,488.26 and 316,670.24

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Solution

The fourth proportional to 520,605.26, 718,488.26 and 316,670.24 is: 437,037.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,605.26 : 718,488.26 = 316,670.24 : x
  2. Step 2: Convert to fraction form
    520,605.26/718,488.26 = 316,670.24/x
  3. Step 3: Cross multiply
    520,605.26x = 718,488.26 × 316,670.24
  4. Step 4: Simplify right side
    520,605.26x = 227,523,848,148.03
  5. Step 5: Solve for x
    x = 227,523,848,148.03/520,605.26
  6. Step 6: Final answer
    x = 437,037.17

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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.