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Finding the Fourth Proportional to 93,907.80, 141,207.30 and 78,701.40

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Solution

The fourth proportional to 93,907.80, 141,207.30 and 78,701.40 is: 118,341.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,907.80 : 141,207.30 = 78,701.40 : x
  2. Step 2: Convert to fraction form
    93,907.80/141,207.30 = 78,701.40/x
  3. Step 3: Cross multiply
    93,907.80x = 141,207.30 × 78,701.40
  4. Step 4: Simplify right side
    93,907.80x = 11,113,212,200.22
  5. Step 5: Solve for x
    x = 11,113,212,200.22/93,907.80
  6. Step 6: Final answer
    x = 118,341.74

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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.