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Finding the Fourth Proportional to 418,889.34, 623,595.92 and 416,398.19

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Solution

The fourth proportional to 418,889.34, 623,595.92 and 416,398.19 is: 619,887.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,889.34 : 623,595.92 = 416,398.19 : x
  2. Step 2: Convert to fraction form
    418,889.34/623,595.92 = 416,398.19/x
  3. Step 3: Cross multiply
    418,889.34x = 623,595.92 × 416,398.19
  4. Step 4: Simplify right side
    418,889.34x = 259,664,207,179.41
  5. Step 5: Solve for x
    x = 259,664,207,179.41/418,889.34
  6. Step 6: Final answer
    x = 619,887.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.