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Finding the Fourth Proportional to 705,419.67, 973,486.17 and 383,136.06

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Solution

The fourth proportional to 705,419.67, 973,486.17 and 383,136.06 is: 528,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,419.67 : 973,486.17 = 383,136.06 : x
  2. Step 2: Convert to fraction form
    705,419.67/973,486.17 = 383,136.06/x
  3. Step 3: Cross multiply
    705,419.67x = 973,486.17 × 383,136.06
  4. Step 4: Simplify right side
    705,419.67x = 372,977,655,638.29
  5. Step 5: Solve for x
    x = 372,977,655,638.29/705,419.67
  6. Step 6: Final answer
    x = 528,731.58

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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.