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Finding the Fourth Proportional to 644,573.60, 889,653.84 and 358,192.16

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Solution

The fourth proportional to 644,573.60, 889,653.84 and 358,192.16 is: 494,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,573.60 : 889,653.84 = 358,192.16 : x
  2. Step 2: Convert to fraction form
    644,573.60/889,653.84 = 358,192.16/x
  3. Step 3: Cross multiply
    644,573.60x = 889,653.84 × 358,192.16
  4. Step 4: Simplify right side
    644,573.60x = 318,667,030,601.89
  5. Step 5: Solve for x
    x = 318,667,030,601.89/644,573.60
  6. Step 6: Final answer
    x = 494,384.24

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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.