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Finding the Fourth Proportional to 209,337.98, 288,779.90 and 136,783.29

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Solution

The fourth proportional to 209,337.98, 288,779.90 and 136,783.29 is: 188,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,337.98 : 288,779.90 = 136,783.29 : x
  2. Step 2: Convert to fraction form
    209,337.98/288,779.90 = 136,783.29/x
  3. Step 3: Cross multiply
    209,337.98x = 288,779.90 × 136,783.29
  4. Step 4: Simplify right side
    209,337.98x = 39,500,264,807.87
  5. Step 5: Solve for x
    x = 39,500,264,807.87/209,337.98
  6. Step 6: Final answer
    x = 188,691.34

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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.