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Finding the Fourth Proportional to 705,510.66, 973,611.90 and 383,227.05

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Solution

The fourth proportional to 705,510.66, 973,611.90 and 383,227.05 is: 528,857.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,510.66 : 973,611.90 = 383,227.05 : x
  2. Step 2: Convert to fraction form
    705,510.66/973,611.90 = 383,227.05/x
  3. Step 3: Cross multiply
    705,510.66x = 973,611.90 × 383,227.05
  4. Step 4: Simplify right side
    705,510.66x = 373,114,416,281.90
  5. Step 5: Solve for x
    x = 373,114,416,281.90/705,510.66
  6. Step 6: Final answer
    x = 528,857.23

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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.