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Finding the Fourth Proportional to 186,305.05, 257,100.90 and 101,422.09

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Solution

The fourth proportional to 186,305.05, 257,100.90 and 101,422.09 is: 139,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,305.05 : 257,100.90 = 101,422.09 : x
  2. Step 2: Convert to fraction form
    186,305.05/257,100.90 = 101,422.09/x
  3. Step 3: Cross multiply
    186,305.05x = 257,100.90 × 101,422.09
  4. Step 4: Simplify right side
    186,305.05x = 26,075,710,618.88
  5. Step 5: Solve for x
    x = 26,075,710,618.88/186,305.05
  6. Step 6: Final answer
    x = 139,962.45

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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.