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Finding the Fourth Proportional to 174,038.40, 260,838.90 and 85,100.40

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Solution

The fourth proportional to 174,038.40, 260,838.90 and 85,100.40 is: 127,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,038.40 : 260,838.90 = 85,100.40 : x
  2. Step 2: Convert to fraction form
    174,038.40/260,838.90 = 85,100.40/x
  3. Step 3: Cross multiply
    174,038.40x = 260,838.90 × 85,100.40
  4. Step 4: Simplify right side
    174,038.40x = 22,197,494,725.56
  5. Step 5: Solve for x
    x = 22,197,494,725.56/174,038.40
  6. Step 6: Final answer
    x = 127,543.66

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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.