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Finding the Fourth Proportional to 719,586.75, 993,117.20 and 417,780.75

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Solution

The fourth proportional to 719,586.75, 993,117.20 and 417,780.75 is: 576,588.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,586.75 : 993,117.20 = 417,780.75 : x
  2. Step 2: Convert to fraction form
    719,586.75/993,117.20 = 417,780.75/x
  3. Step 3: Cross multiply
    719,586.75x = 993,117.20 × 417,780.75
  4. Step 4: Simplify right side
    719,586.75x = 414,905,246,565.00
  5. Step 5: Solve for x
    x = 414,905,246,565.00/719,586.75
  6. Step 6: Final answer
    x = 576,588.22

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Double scale
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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.