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Finding the Fourth Proportional to 582,516.30, 803,458.42 and 388,826.36

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Solution

The fourth proportional to 582,516.30, 803,458.42 and 388,826.36 is: 536,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,516.30 : 803,458.42 = 388,826.36 : x
  2. Step 2: Convert to fraction form
    582,516.30/803,458.42 = 388,826.36/x
  3. Step 3: Cross multiply
    582,516.30x = 803,458.42 × 388,826.36
  4. Step 4: Simplify right side
    582,516.30x = 312,405,812,859.95
  5. Step 5: Solve for x
    x = 312,405,812,859.95/582,516.30
  6. Step 6: Final answer
    x = 536,303.98

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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.