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Finding the Fourth Proportional to 692,683.65, 956,121.17 and 406,319.49

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Solution

The fourth proportional to 692,683.65, 956,121.17 and 406,319.49 is: 560,848.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,683.65 : 956,121.17 = 406,319.49 : x
  2. Step 2: Convert to fraction form
    692,683.65/956,121.17 = 406,319.49/x
  3. Step 3: Cross multiply
    692,683.65x = 956,121.17 × 406,319.49
  4. Step 4: Simplify right side
    692,683.65x = 388,490,664,141.01
  5. Step 5: Solve for x
    x = 388,490,664,141.01/692,683.65
  6. Step 6: Final answer
    x = 560,848.61

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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.