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Finding the Fourth Proportional to 174,436.80, 261,655.20 and 156,940.80

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Solution

The fourth proportional to 174,436.80, 261,655.20 and 156,940.80 is: 235,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,436.80 : 261,655.20 = 156,940.80 : x
  2. Step 2: Convert to fraction form
    174,436.80/261,655.20 = 156,940.80/x
  3. Step 3: Cross multiply
    174,436.80x = 261,655.20 × 156,940.80
  4. Step 4: Simplify right side
    174,436.80x = 41,064,376,412.16
  5. Step 5: Solve for x
    x = 41,064,376,412.16/174,436.80
  6. Step 6: Final answer
    x = 235,411.20

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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.