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Finding the Fourth Proportional to 65,248.16, 90,038.19 and 38,385.48

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Solution

The fourth proportional to 65,248.16, 90,038.19 and 38,385.48 is: 52,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,248.16 : 90,038.19 = 38,385.48 : x
  2. Step 2: Convert to fraction form
    65,248.16/90,038.19 = 38,385.48/x
  3. Step 3: Cross multiply
    65,248.16x = 90,038.19 × 38,385.48
  4. Step 4: Simplify right side
    65,248.16x = 3,456,158,787.25
  5. Step 5: Solve for x
    x = 3,456,158,787.25/65,248.16
  6. Step 6: Final answer
    x = 52,969.45

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