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Finding the Fourth Proportional to 173,897.80, 260,895.30 and 85,154.20

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Solution

The fourth proportional to 173,897.80, 260,895.30 and 85,154.20 is: 127,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,897.80 : 260,895.30 = 85,154.20 : x
  2. Step 2: Convert to fraction form
    173,897.80/260,895.30 = 85,154.20/x
  3. Step 3: Cross multiply
    173,897.80x = 260,895.30 × 85,154.20
  4. Step 4: Simplify right side
    173,897.80x = 22,216,330,555.26
  5. Step 5: Solve for x
    x = 22,216,330,555.26/173,897.80
  6. Step 6: Final answer
    x = 127,755.10

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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.