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Finding the Fourth Proportional to 60,557.60, 90,851.76 and 39,821.60

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Solution

The fourth proportional to 60,557.60, 90,851.76 and 39,821.60 is: 59,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,557.60 : 90,851.76 = 39,821.60 : x
  2. Step 2: Convert to fraction form
    60,557.60/90,851.76 = 39,821.60/x
  3. Step 3: Cross multiply
    60,557.60x = 90,851.76 × 39,821.60
  4. Step 4: Simplify right side
    60,557.60x = 3,617,862,446.02
  5. Step 5: Solve for x
    x = 3,617,862,446.02/60,557.60
  6. Step 6: Final answer
    x = 59,742.50

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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.