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Finding the Fourth Proportional to 186,907.40, 257,817.28 and 133,209.80

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Solution

The fourth proportional to 186,907.40, 257,817.28 and 133,209.80 is: 183,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,907.40 : 257,817.28 = 133,209.80 : x
  2. Step 2: Convert to fraction form
    186,907.40/257,817.28 = 133,209.80/x
  3. Step 3: Cross multiply
    186,907.40x = 257,817.28 × 133,209.80
  4. Step 4: Simplify right side
    186,907.40x = 34,343,788,305.34
  5. Step 5: Solve for x
    x = 34,343,788,305.34/186,907.40
  6. Step 6: Final answer
    x = 183,747.61

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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.