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Finding the Fourth Proportional to 612,875.84, 919,313.76 and 192,185.60

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Solution

The fourth proportional to 612,875.84, 919,313.76 and 192,185.60 is: 288,278.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,875.84 : 919,313.76 = 192,185.60 : x
  2. Step 2: Convert to fraction form
    612,875.84/919,313.76 = 192,185.60/x
  3. Step 3: Cross multiply
    612,875.84x = 919,313.76 × 192,185.60
  4. Step 4: Simplify right side
    612,875.84x = 176,678,866,553.86
  5. Step 5: Solve for x
    x = 176,678,866,553.86/612,875.84
  6. Step 6: Final answer
    x = 288,278.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.