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Finding the Fourth Proportional to 316,354.90, 436,569.68 and 173,114.90

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Solution

The fourth proportional to 316,354.90, 436,569.68 and 173,114.90 is: 238,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,354.90 : 436,569.68 = 173,114.90 : x
  2. Step 2: Convert to fraction form
    316,354.90/436,569.68 = 173,114.90/x
  3. Step 3: Cross multiply
    316,354.90x = 436,569.68 × 173,114.90
  4. Step 4: Simplify right side
    316,354.90x = 75,576,716,496.23
  5. Step 5: Solve for x
    x = 75,576,716,496.23/316,354.90
  6. Step 6: Final answer
    x = 238,898.52

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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.