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Finding the Fourth Proportional to 74,925.30, 112,059.90 and 57,210.60

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Solution

The fourth proportional to 74,925.30, 112,059.90 and 57,210.60 is: 85,565.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,925.30 : 112,059.90 = 57,210.60 : x
  2. Step 2: Convert to fraction form
    74,925.30/112,059.90 = 57,210.60/x
  3. Step 3: Cross multiply
    74,925.30x = 112,059.90 × 57,210.60
  4. Step 4: Simplify right side
    74,925.30x = 6,411,014,114.94
  5. Step 5: Solve for x
    x = 6,411,014,114.94/74,925.30
  6. Step 6: Final answer
    x = 85,565.41

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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.