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Finding the Fourth Proportional to 205,810.60, 308,888.70 and 93,663.40

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Solution

The fourth proportional to 205,810.60, 308,888.70 and 93,663.40 is: 140,573.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,810.60 : 308,888.70 = 93,663.40 : x
  2. Step 2: Convert to fraction form
    205,810.60/308,888.70 = 93,663.40/x
  3. Step 3: Cross multiply
    205,810.60x = 308,888.70 × 93,663.40
  4. Step 4: Simplify right side
    205,810.60x = 28,931,565,863.58
  5. Step 5: Solve for x
    x = 28,931,565,863.58/205,810.60
  6. Step 6: Final answer
    x = 140,573.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.