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Finding the Fourth Proportional to 714,674.99, 985,970.21 and 408,586.93

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Solution

The fourth proportional to 714,674.99, 985,970.21 and 408,586.93 is: 563,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,674.99 : 985,970.21 = 408,586.93 : x
  2. Step 2: Convert to fraction form
    714,674.99/985,970.21 = 408,586.93/x
  3. Step 3: Cross multiply
    714,674.99x = 985,970.21 × 408,586.93
  4. Step 4: Simplify right side
    714,674.99x = 402,854,536,667.50
  5. Step 5: Solve for x
    x = 402,854,536,667.50/714,674.99
  6. Step 6: Final answer
    x = 563,689.15

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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.