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Finding the Fourth Proportional to 128,929.60, 193,427.04 and 62,401.60

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Solution

The fourth proportional to 128,929.60, 193,427.04 and 62,401.60 is: 93,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,929.60 : 193,427.04 = 62,401.60 : x
  2. Step 2: Convert to fraction form
    128,929.60/193,427.04 = 62,401.60/x
  3. Step 3: Cross multiply
    128,929.60x = 193,427.04 × 62,401.60
  4. Step 4: Simplify right side
    128,929.60x = 12,070,156,779.26
  5. Step 5: Solve for x
    x = 12,070,156,779.26/128,929.60
  6. Step 6: Final answer
    x = 93,618.20

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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.