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Finding the Fourth Proportional to 97,412.32, 134,430.96 and 57,156.96

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Solution

The fourth proportional to 97,412.32, 134,430.96 and 57,156.96 is: 78,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,412.32 : 134,430.96 = 57,156.96 : x
  2. Step 2: Convert to fraction form
    97,412.32/134,430.96 = 57,156.96/x
  3. Step 3: Cross multiply
    97,412.32x = 134,430.96 × 57,156.96
  4. Step 4: Simplify right side
    97,412.32x = 7,683,665,003.48
  5. Step 5: Solve for x
    x = 7,683,665,003.48/97,412.32
  6. Step 6: Final answer
    x = 78,877.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.