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Finding the Fourth Proportional to 461,288.79, 636,606.81 and 257,340.11

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Solution

The fourth proportional to 461,288.79, 636,606.81 and 257,340.11 is: 355,145.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,288.79 : 636,606.81 = 257,340.11 : x
  2. Step 2: Convert to fraction form
    461,288.79/636,606.81 = 257,340.11/x
  3. Step 3: Cross multiply
    461,288.79x = 636,606.81 × 257,340.11
  4. Step 4: Simplify right side
    461,288.79x = 163,824,463,329.12
  5. Step 5: Solve for x
    x = 163,824,463,329.12/461,288.79
  6. Step 6: Final answer
    x = 355,145.12

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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.