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Finding the Fourth Proportional to 705,506.81, 973,617.53 and 383,235.35

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Solution

The fourth proportional to 705,506.81, 973,617.53 and 383,235.35 is: 528,874.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,506.81 : 973,617.53 = 383,235.35 : x
  2. Step 2: Convert to fraction form
    705,506.81/973,617.53 = 383,235.35/x
  3. Step 3: Cross multiply
    705,506.81x = 973,617.53 × 383,235.35
  4. Step 4: Simplify right side
    705,506.81x = 373,124,648,091.42
  5. Step 5: Solve for x
    x = 373,124,648,091.42/705,506.81
  6. Step 6: Final answer
    x = 528,874.63

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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.