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Finding the Fourth Proportional to 657,140.58, 906,854.00 and 355,334.58

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Solution

The fourth proportional to 657,140.58, 906,854.00 and 355,334.58 is: 490,361.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,140.58 : 906,854.00 = 355,334.58 : x
  2. Step 2: Convert to fraction form
    657,140.58/906,854.00 = 355,334.58/x
  3. Step 3: Cross multiply
    657,140.58x = 906,854.00 × 355,334.58
  4. Step 4: Simplify right side
    657,140.58x = 322,236,583,434.65
  5. Step 5: Solve for x
    x = 322,236,583,434.65/657,140.58
  6. Step 6: Final answer
    x = 490,361.72

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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.