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Finding the Fourth Proportional to 586,350.40, 879,525.60 and 399,726.40

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Solution

The fourth proportional to 586,350.40, 879,525.60 and 399,726.40 is: 599,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,350.40 : 879,525.60 = 399,726.40 : x
  2. Step 2: Convert to fraction form
    586,350.40/879,525.60 = 399,726.40/x
  3. Step 3: Cross multiply
    586,350.40x = 879,525.60 × 399,726.40
  4. Step 4: Simplify right side
    586,350.40x = 351,569,601,795.84
  5. Step 5: Solve for x
    x = 351,569,601,795.84/586,350.40
  6. Step 6: Final answer
    x = 599,589.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.