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Finding the Fourth Proportional to 64,463.42, 88,963.44 and 42,915.98

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Solution

The fourth proportional to 64,463.42, 88,963.44 and 42,915.98 is: 59,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,463.42 : 88,963.44 = 42,915.98 : x
  2. Step 2: Convert to fraction form
    64,463.42/88,963.44 = 42,915.98/x
  3. Step 3: Cross multiply
    64,463.42x = 88,963.44 × 42,915.98
  4. Step 4: Simplify right side
    64,463.42x = 3,817,953,211.77
  5. Step 5: Solve for x
    x = 3,817,953,211.77/64,463.42
  6. Step 6: Final answer
    x = 59,226.66

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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.