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Finding the Fourth Proportional to 705,988.73, 974,264.55 and 383,698.83

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Solution

The fourth proportional to 705,988.73, 974,264.55 and 383,698.83 is: 529,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,988.73 : 974,264.55 = 383,698.83 : x
  2. Step 2: Convert to fraction form
    705,988.73/974,264.55 = 383,698.83/x
  3. Step 3: Cross multiply
    705,988.73x = 974,264.55 × 383,698.83
  4. Step 4: Simplify right side
    705,988.73x = 373,824,167,945.48
  5. Step 5: Solve for x
    x = 373,824,167,945.48/705,988.73
  6. Step 6: Final answer
    x = 529,504.44

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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.