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Finding the Fourth Proportional to 641,957, 885,900.10 and 355,477.08

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Solution

The fourth proportional to 641,957, 885,900.10 and 355,477.08 is: 490,558.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,957 : 885,900.10 = 355,477.08 : x
  2. Step 2: Convert to fraction form
    641,957/885,900.10 = 355,477.08/x
  3. Step 3: Cross multiply
    641,957x = 885,900.10 × 355,477.08
  4. Step 4: Simplify right side
    641,957x = 314,917,180,719.71
  5. Step 5: Solve for x
    x = 314,917,180,719.71/641,957
  6. Step 6: Final answer
    x = 490,558.06

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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.