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Finding the Fourth Proportional to 718,555.91, 991,573.80 and 412,416.83

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Solution

The fourth proportional to 718,555.91, 991,573.80 and 412,416.83 is: 569,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,555.91 : 991,573.80 = 412,416.83 : x
  2. Step 2: Convert to fraction form
    718,555.91/991,573.80 = 412,416.83/x
  3. Step 3: Cross multiply
    718,555.91x = 991,573.80 × 412,416.83
  4. Step 4: Simplify right side
    718,555.91x = 408,941,718,349.19
  5. Step 5: Solve for x
    x = 408,941,718,349.19/718,555.91
  6. Step 6: Final answer
    x = 569,116.08

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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.