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Finding the Fourth Proportional to 561,036.71, 774,260.55 and 319,397.13

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Solution

The fourth proportional to 561,036.71, 774,260.55 and 319,397.13 is: 440,785.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,036.71 : 774,260.55 = 319,397.13 : x
  2. Step 2: Convert to fraction form
    561,036.71/774,260.55 = 319,397.13/x
  3. Step 3: Cross multiply
    561,036.71x = 774,260.55 × 319,397.13
  4. Step 4: Simplify right side
    561,036.71x = 247,296,597,542.22
  5. Step 5: Solve for x
    x = 247,296,597,542.22/561,036.71
  6. Step 6: Final answer
    x = 440,785.06

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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.