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Finding the Fourth Proportional to 644,798.07, 889,842.92 and 358,330.23

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Solution

The fourth proportional to 644,798.07, 889,842.92 and 358,330.23 is: 494,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,798.07 : 889,842.92 = 358,330.23 : x
  2. Step 2: Convert to fraction form
    644,798.07/889,842.92 = 358,330.23/x
  3. Step 3: Cross multiply
    644,798.07x = 889,842.92 × 358,330.23
  4. Step 4: Simplify right side
    644,798.07x = 318,857,616,395.82
  5. Step 5: Solve for x
    x = 318,857,616,395.82/644,798.07
  6. Step 6: Final answer
    x = 494,507.71

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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.