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Finding the Fourth Proportional to 718,300.66, 991,254.59 and 412,396.77

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Solution

The fourth proportional to 718,300.66, 991,254.59 and 412,396.77 is: 569,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,300.66 : 991,254.59 = 412,396.77 : x
  2. Step 2: Convert to fraction form
    718,300.66/991,254.59 = 412,396.77/x
  3. Step 3: Cross multiply
    718,300.66x = 991,254.59 × 412,396.77
  4. Step 4: Simplify right side
    718,300.66x = 408,790,189,101.69
  5. Step 5: Solve for x
    x = 408,790,189,101.69/718,300.66
  6. Step 6: Final answer
    x = 569,107.36

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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.