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Finding the Fourth Proportional to 705,521.45, 973,621.45 and 383,228.93

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Solution

The fourth proportional to 705,521.45, 973,621.45 and 383,228.93 is: 528,856.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,521.45 : 973,621.45 = 383,228.93 : x
  2. Step 2: Convert to fraction form
    705,521.45/973,621.45 = 383,228.93/x
  3. Step 3: Cross multiply
    705,521.45x = 973,621.45 × 383,228.93
  4. Step 4: Simplify right side
    705,521.45x = 373,119,909,421.64
  5. Step 5: Solve for x
    x = 373,119,909,421.64/705,521.45
  6. Step 6: Final answer
    x = 528,856.93

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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.