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Finding the Fourth Proportional to 346,505.48, 478,177.62 and 187,529.48

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Solution

The fourth proportional to 346,505.48, 478,177.62 and 187,529.48 is: 258,790.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,505.48 : 478,177.62 = 187,529.48 : x
  2. Step 2: Convert to fraction form
    346,505.48/478,177.62 = 187,529.48/x
  3. Step 3: Cross multiply
    346,505.48x = 478,177.62 × 187,529.48
  4. Step 4: Simplify right side
    346,505.48x = 89,672,400,426.24
  5. Step 5: Solve for x
    x = 89,672,400,426.24/346,505.48
  6. Step 6: Final answer
    x = 258,790.71

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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.