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Finding the Fourth Proportional to 450,574.16, 621,767.64 and 256,953.44

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Solution

The fourth proportional to 450,574.16, 621,767.64 and 256,953.44 is: 354,581.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,574.16 : 621,767.64 = 256,953.44 : x
  2. Step 2: Convert to fraction form
    450,574.16/621,767.64 = 256,953.44/x
  3. Step 3: Cross multiply
    450,574.16x = 621,767.64 × 256,953.44
  4. Step 4: Simplify right side
    450,574.16x = 159,765,333,978.68
  5. Step 5: Solve for x
    x = 159,765,333,978.68/450,574.16
  6. Step 6: Final answer
    x = 354,581.66

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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.