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Finding the Fourth Proportional to 186,412.84, 257,070.90 and 125,297.32

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Solution

The fourth proportional to 186,412.84, 257,070.90 and 125,297.32 is: 172,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,412.84 : 257,070.90 = 125,297.32 : x
  2. Step 2: Convert to fraction form
    186,412.84/257,070.90 = 125,297.32/x
  3. Step 3: Cross multiply
    186,412.84x = 257,070.90 × 125,297.32
  4. Step 4: Simplify right side
    186,412.84x = 32,210,294,819.99
  5. Step 5: Solve for x
    x = 32,210,294,819.99/186,412.84
  6. Step 6: Final answer
    x = 172,790.11

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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.