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Finding the Fourth Proportional to 127,281.60, 190,922.40 and 89,762.40

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Solution

The fourth proportional to 127,281.60, 190,922.40 and 89,762.40 is: 134,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,281.60 : 190,922.40 = 89,762.40 : x
  2. Step 2: Convert to fraction form
    127,281.60/190,922.40 = 89,762.40/x
  3. Step 3: Cross multiply
    127,281.60x = 190,922.40 × 89,762.40
  4. Step 4: Simplify right side
    127,281.60x = 17,137,652,837.76
  5. Step 5: Solve for x
    x = 17,137,652,837.76/127,281.60
  6. Step 6: Final answer
    x = 134,643.60

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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.