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Finding the Fourth Proportional to 617,277.12, 851,653.46 and 402,338.76

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Solution

The fourth proportional to 617,277.12, 851,653.46 and 402,338.76 is: 555,104.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,277.12 : 851,653.46 = 402,338.76 : x
  2. Step 2: Convert to fraction form
    617,277.12/851,653.46 = 402,338.76/x
  3. Step 3: Cross multiply
    617,277.12x = 851,653.46 × 402,338.76
  4. Step 4: Simplify right side
    617,277.12x = 342,653,197,046.11
  5. Step 5: Solve for x
    x = 342,653,197,046.11/617,277.12
  6. Step 6: Final answer
    x = 555,104.32

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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.