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Finding the Fourth Proportional to 643,096.46, 887,527.63 and 356,708.81

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Solution

The fourth proportional to 643,096.46, 887,527.63 and 356,708.81 is: 492,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,096.46 : 887,527.63 = 356,708.81 : x
  2. Step 2: Convert to fraction form
    643,096.46/887,527.63 = 356,708.81/x
  3. Step 3: Cross multiply
    643,096.46x = 887,527.63 × 356,708.81
  4. Step 4: Simplify right side
    643,096.46x = 316,588,927,404.13
  5. Step 5: Solve for x
    x = 316,588,927,404.13/643,096.46
  6. Step 6: Final answer
    x = 492,288.40

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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.