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Finding the Fourth Proportional to 253,005.90, 349,309.17 and 157,652.70

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Solution

The fourth proportional to 253,005.90, 349,309.17 and 157,652.70 is: 217,661.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,005.90 : 349,309.17 = 157,652.70 : x
  2. Step 2: Convert to fraction form
    253,005.90/349,309.17 = 157,652.70/x
  3. Step 3: Cross multiply
    253,005.90x = 349,309.17 × 157,652.70
  4. Step 4: Simplify right side
    253,005.90x = 55,069,533,785.26
  5. Step 5: Solve for x
    x = 55,069,533,785.26/253,005.90
  6. Step 6: Final answer
    x = 217,661.07

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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.