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Finding the Fourth Proportional to 637,615.80, 879,912.36 and 382,971.24

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Solution

The fourth proportional to 637,615.80, 879,912.36 and 382,971.24 is: 528,501.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,615.80 : 879,912.36 = 382,971.24 : x
  2. Step 2: Convert to fraction form
    637,615.80/879,912.36 = 382,971.24/x
  3. Step 3: Cross multiply
    637,615.80x = 879,912.36 × 382,971.24
  4. Step 4: Simplify right side
    637,615.80x = 336,981,127,600.53
  5. Step 5: Solve for x
    x = 336,981,127,600.53/637,615.80
  6. Step 6: Final answer
    x = 528,501.85

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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.