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Finding the Fourth Proportional to 705,425.42, 973,498.71 and 383,135.76

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Solution

The fourth proportional to 705,425.42, 973,498.71 and 383,135.76 is: 528,733.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,425.42 : 973,498.71 = 383,135.76 : x
  2. Step 2: Convert to fraction form
    705,425.42/973,498.71 = 383,135.76/x
  3. Step 3: Cross multiply
    705,425.42x = 973,498.71 × 383,135.76
  4. Step 4: Simplify right side
    705,425.42x = 372,982,168,114.87
  5. Step 5: Solve for x
    x = 372,982,168,114.87/705,425.42
  6. Step 6: Final answer
    x = 528,733.67

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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.