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Finding the Fourth Proportional to 99,810.30, 149,715.45 and 93,905.40

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Solution

The fourth proportional to 99,810.30, 149,715.45 and 93,905.40 is: 140,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,810.30 : 149,715.45 = 93,905.40 : x
  2. Step 2: Convert to fraction form
    99,810.30/149,715.45 = 93,905.40/x
  3. Step 3: Cross multiply
    99,810.30x = 149,715.45 × 93,905.40
  4. Step 4: Simplify right side
    99,810.30x = 14,059,089,218.43
  5. Step 5: Solve for x
    x = 14,059,089,218.43/99,810.30
  6. Step 6: Final answer
    x = 140,858.10

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1.5x scale

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.