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Finding the Fourth Proportional to 439,588.52, 606,646.50 and 286,726.76

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Solution

The fourth proportional to 439,588.52, 606,646.50 and 286,726.76 is: 395,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,588.52 : 606,646.50 = 286,726.76 : x
  2. Step 2: Convert to fraction form
    439,588.52/606,646.50 = 286,726.76/x
  3. Step 3: Cross multiply
    439,588.52x = 606,646.50 × 286,726.76
  4. Step 4: Simplify right side
    439,588.52x = 173,941,785,410.34
  5. Step 5: Solve for x
    x = 173,941,785,410.34/439,588.52
  6. Step 6: Final answer
    x = 395,692.28

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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.