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Finding the Fourth Proportional to 236,866.71, 326,862.18 and 129,437.58

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Solution

The fourth proportional to 236,866.71, 326,862.18 and 129,437.58 is: 178,616.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,866.71 : 326,862.18 = 129,437.58 : x
  2. Step 2: Convert to fraction form
    236,866.71/326,862.18 = 129,437.58/x
  3. Step 3: Cross multiply
    236,866.71x = 326,862.18 × 129,437.58
  4. Step 4: Simplify right side
    236,866.71x = 42,308,249,572.72
  5. Step 5: Solve for x
    x = 42,308,249,572.72/236,866.71
  6. Step 6: Final answer
    x = 178,616.28

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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.