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Finding the Fourth Proportional to 65,145.60, 97,603.20 and 57,772.80

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Solution

The fourth proportional to 65,145.60, 97,603.20 and 57,772.80 is: 86,557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,145.60 : 97,603.20 = 57,772.80 : x
  2. Step 2: Convert to fraction form
    65,145.60/97,603.20 = 57,772.80/x
  3. Step 3: Cross multiply
    65,145.60x = 97,603.20 × 57,772.80
  4. Step 4: Simplify right side
    65,145.60x = 5,638,810,152.96
  5. Step 5: Solve for x
    x = 5,638,810,152.96/65,145.60
  6. Step 6: Final answer
    x = 86,557.04

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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.