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Finding the Fourth Proportional to 186,688.78, 257,649.96 and 115,066.96

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Solution

The fourth proportional to 186,688.78, 257,649.96 and 115,066.96 is: 158,804.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,688.78 : 257,649.96 = 115,066.96 : x
  2. Step 2: Convert to fraction form
    186,688.78/257,649.96 = 115,066.96/x
  3. Step 3: Cross multiply
    186,688.78x = 257,649.96 × 115,066.96
  4. Step 4: Simplify right side
    186,688.78x = 29,646,997,641.32
  5. Step 5: Solve for x
    x = 29,646,997,641.32/186,688.78
  6. Step 6: Final answer
    x = 158,804.39

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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.