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Finding the Fourth Proportional to 93,139.80, 139,712.10 and 34,019.52

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Solution

The fourth proportional to 93,139.80, 139,712.10 and 34,019.52 is: 51,030.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,139.80 : 139,712.10 = 34,019.52 : x
  2. Step 2: Convert to fraction form
    93,139.80/139,712.10 = 34,019.52/x
  3. Step 3: Cross multiply
    93,139.80x = 139,712.10 × 34,019.52
  4. Step 4: Simplify right side
    93,139.80x = 4,752,938,580.19
  5. Step 5: Solve for x
    x = 4,752,938,580.19/93,139.80
  6. Step 6: Final answer
    x = 51,030.16

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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.