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Finding the Fourth Proportional to 97,415.40, 134,387.10 and 63,411.48

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Solution

The fourth proportional to 97,415.40, 134,387.10 and 63,411.48 is: 87,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,415.40 : 134,387.10 = 63,411.48 : x
  2. Step 2: Convert to fraction form
    97,415.40/134,387.10 = 63,411.48/x
  3. Step 3: Cross multiply
    97,415.40x = 134,387.10 × 63,411.48
  4. Step 4: Simplify right side
    97,415.40x = 8,521,684,903.91
  5. Step 5: Solve for x
    x = 8,521,684,903.91/97,415.40
  6. Step 6: Final answer
    x = 87,477.80

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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.