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Finding the Fourth Proportional to 825,554.74, 1,138,782 and 519,146.32

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Solution

The fourth proportional to 825,554.74, 1,138,782 and 519,146.32 is: 716,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,554.74 : 1,138,782 = 519,146.32 : x
  2. Step 2: Convert to fraction form
    825,554.74/1,138,782 = 519,146.32/x
  3. Step 3: Cross multiply
    825,554.74x = 1,138,782 × 519,146.32
  4. Step 4: Simplify right side
    825,554.74x = 591,194,484,582.24
  5. Step 5: Solve for x
    x = 591,194,484,582.24/825,554.74
  6. Step 6: Final answer
    x = 716,117.85

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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.