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Finding the Fourth Proportional to 261,070.80, 391,168.80 and 223,454.40

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Solution

The fourth proportional to 261,070.80, 391,168.80 and 223,454.40 is: 334,807.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,070.80 : 391,168.80 = 223,454.40 : x
  2. Step 2: Convert to fraction form
    261,070.80/391,168.80 = 223,454.40/x
  3. Step 3: Cross multiply
    261,070.80x = 391,168.80 × 223,454.40
  4. Step 4: Simplify right side
    261,070.80x = 87,408,389,502.72
  5. Step 5: Solve for x
    x = 87,408,389,502.72/261,070.80
  6. Step 6: Final answer
    x = 334,807.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.