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Finding the Fourth Proportional to 672,955.65, 928,153.69 and 431,260.70

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Solution

The fourth proportional to 672,955.65, 928,153.69 and 431,260.70 is: 594,803.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,955.65 : 928,153.69 = 431,260.70 : x
  2. Step 2: Convert to fraction form
    672,955.65/928,153.69 = 431,260.70/x
  3. Step 3: Cross multiply
    672,955.65x = 928,153.69 × 431,260.70
  4. Step 4: Simplify right side
    672,955.65x = 400,276,204,338.06
  5. Step 5: Solve for x
    x = 400,276,204,338.06/672,955.65
  6. Step 6: Final answer
    x = 594,803.24

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Double scale
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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.