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Finding the Fourth Proportional to 519,139.63, 716,412.69 and 280,675.63

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Solution

The fourth proportional to 519,139.63, 716,412.69 and 280,675.63 is: 387,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,139.63 : 716,412.69 = 280,675.63 : x
  2. Step 2: Convert to fraction form
    519,139.63/716,412.69 = 280,675.63/x
  3. Step 3: Cross multiply
    519,139.63x = 716,412.69 × 280,675.63
  4. Step 4: Simplify right side
    519,139.63x = 201,079,578,120.30
  5. Step 5: Solve for x
    x = 201,079,578,120.30/519,139.63
  6. Step 6: Final answer
    x = 387,332.36

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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.