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Finding the Fourth Proportional to 705,815.70, 974,031.51 and 383,525.80

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Solution

The fourth proportional to 705,815.70, 974,031.51 and 383,525.80 is: 529,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,815.70 : 974,031.51 = 383,525.80 : x
  2. Step 2: Convert to fraction form
    705,815.70/974,031.51 = 383,525.80/x
  3. Step 3: Cross multiply
    705,815.70x = 974,031.51 × 383,525.80
  4. Step 4: Simplify right side
    705,815.70x = 373,566,214,097.96
  5. Step 5: Solve for x
    x = 373,566,214,097.96/705,815.70
  6. Step 6: Final answer
    x = 529,268.78

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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.