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Finding the Fourth Proportional to 92,792.76, 128,011.50 and 55,053.24

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Solution

The fourth proportional to 92,792.76, 128,011.50 and 55,053.24 is: 75,948.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,792.76 : 128,011.50 = 55,053.24 : x
  2. Step 2: Convert to fraction form
    92,792.76/128,011.50 = 55,053.24/x
  3. Step 3: Cross multiply
    92,792.76x = 128,011.50 × 55,053.24
  4. Step 4: Simplify right side
    92,792.76x = 7,047,447,832.26
  5. Step 5: Solve for x
    x = 7,047,447,832.26/92,792.76
  6. Step 6: Final answer
    x = 75,948.25

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1.5x scale

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.