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Finding the Fourth Proportional to 85,637.76, 128,134.08 and 59,393.28

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Solution

The fourth proportional to 85,637.76, 128,134.08 and 59,393.28 is: 88,866.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,637.76 : 128,134.08 = 59,393.28 : x
  2. Step 2: Convert to fraction form
    85,637.76/128,134.08 = 59,393.28/x
  3. Step 3: Cross multiply
    85,637.76x = 128,134.08 × 59,393.28
  4. Step 4: Simplify right side
    85,637.76x = 7,610,303,290.98
  5. Step 5: Solve for x
    x = 7,610,303,290.98/85,637.76
  6. Step 6: Final answer
    x = 88,866.21

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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.