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Finding the Fourth Proportional to 127,638.72, 191,574.72 and 97,960.32

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Solution

The fourth proportional to 127,638.72, 191,574.72 and 97,960.32 is: 147,030.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638.72 : 191,574.72 = 97,960.32 : x
  2. Step 2: Convert to fraction form
    127,638.72/191,574.72 = 97,960.32/x
  3. Step 3: Cross multiply
    127,638.72x = 191,574.72 × 97,960.32
  4. Step 4: Simplify right side
    127,638.72x = 18,766,720,875.11
  5. Step 5: Solve for x
    x = 18,766,720,875.11/127,638.72
  6. Step 6: Final answer
    x = 147,030.00

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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.