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Finding the Fourth Proportional to 279,139.42, 385,088.06 and 186,026.08

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Solution

The fourth proportional to 279,139.42, 385,088.06 and 186,026.08 is: 256,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,139.42 : 385,088.06 = 186,026.08 : x
  2. Step 2: Convert to fraction form
    279,139.42/385,088.06 = 186,026.08/x
  3. Step 3: Cross multiply
    279,139.42x = 385,088.06 × 186,026.08
  4. Step 4: Simplify right side
    279,139.42x = 71,636,422,256.60
  5. Step 5: Solve for x
    x = 71,636,422,256.60/279,139.42
  6. Step 6: Final answer
    x = 256,633.13

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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.