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Finding the Fourth Proportional to 189,010.87, 260,935.12 and 145,897.61

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Solution

The fourth proportional to 189,010.87, 260,935.12 and 145,897.61 is: 201,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,010.87 : 260,935.12 = 145,897.61 : x
  2. Step 2: Convert to fraction form
    189,010.87/260,935.12 = 145,897.61/x
  3. Step 3: Cross multiply
    189,010.87x = 260,935.12 × 145,897.61
  4. Step 4: Simplify right side
    189,010.87x = 38,069,809,250.76
  5. Step 5: Solve for x
    x = 38,069,809,250.76/189,010.87
  6. Step 6: Final answer
    x = 201,415.98

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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.