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Finding the Fourth Proportional to 185,572.34, 256,092.81 and 100,689.40

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Solution

The fourth proportional to 185,572.34, 256,092.81 and 100,689.40 is: 138,952.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,572.34 : 256,092.81 = 100,689.40 : x
  2. Step 2: Convert to fraction form
    185,572.34/256,092.81 = 100,689.40/x
  3. Step 3: Cross multiply
    185,572.34x = 256,092.81 × 100,689.40
  4. Step 4: Simplify right side
    185,572.34x = 25,785,830,879.77
  5. Step 5: Solve for x
    x = 25,785,830,879.77/185,572.34
  6. Step 6: Final answer
    x = 138,952.99

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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.