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Finding the Fourth Proportional to 93,458.67, 139,472.80 and 83,485.95

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Solution

The fourth proportional to 93,458.67, 139,472.80 and 83,485.95 is: 124,590.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,458.67 : 139,472.80 = 83,485.95 : x
  2. Step 2: Convert to fraction form
    93,458.67/139,472.80 = 83,485.95/x
  3. Step 3: Cross multiply
    93,458.67x = 139,472.80 × 83,485.95
  4. Step 4: Simplify right side
    93,458.67x = 11,644,019,207.16
  5. Step 5: Solve for x
    x = 11,644,019,207.16/93,458.67
  6. Step 6: Final answer
    x = 124,590.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.