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Finding the Fourth Proportional to 279,253.06, 385,357.99 and 151,929.18

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Solution

The fourth proportional to 279,253.06, 385,357.99 and 151,929.18 is: 209,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,253.06 : 385,357.99 = 151,929.18 : x
  2. Step 2: Convert to fraction form
    279,253.06/385,357.99 = 151,929.18/x
  3. Step 3: Cross multiply
    279,253.06x = 385,357.99 × 151,929.18
  4. Step 4: Simplify right side
    279,253.06x = 58,547,123,427.15
  5. Step 5: Solve for x
    x = 58,547,123,427.15/279,253.06
  6. Step 6: Final answer
    x = 209,656.16

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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.