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Finding the Fourth Proportional to 705,521.20, 973,637.36 and 383,249.74

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Solution

The fourth proportional to 705,521.20, 973,637.36 and 383,249.74 is: 528,894.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,521.20 : 973,637.36 = 383,249.74 : x
  2. Step 2: Convert to fraction form
    705,521.20/973,637.36 = 383,249.74/x
  3. Step 3: Cross multiply
    705,521.20x = 973,637.36 × 383,249.74
  4. Step 4: Simplify right side
    705,521.20x = 373,146,263,598.32
  5. Step 5: Solve for x
    x = 373,146,263,598.32/705,521.20
  6. Step 6: Final answer
    x = 528,894.48

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Half scale
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Double scale
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Similar ratio
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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.