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Finding the Fourth Proportional to 425,143.67, 586,739.66 and 317,526.84

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Solution

The fourth proportional to 425,143.67, 586,739.66 and 317,526.84 is: 438,217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,143.67 : 586,739.66 = 317,526.84 : x
  2. Step 2: Convert to fraction form
    425,143.67/586,739.66 = 317,526.84/x
  3. Step 3: Cross multiply
    425,143.67x = 586,739.66 × 317,526.84
  4. Step 4: Simplify right side
    425,143.67x = 186,305,588,554.84
  5. Step 5: Solve for x
    x = 186,305,588,554.84/425,143.67
  6. Step 6: Final answer
    x = 438,217.96

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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.