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Finding the Fourth Proportional to 357,455.60, 535,924.20 and 146,985.20

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Solution

The fourth proportional to 357,455.60, 535,924.20 and 146,985.20 is: 220,371.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,455.60 : 535,924.20 = 146,985.20 : x
  2. Step 2: Convert to fraction form
    357,455.60/535,924.20 = 146,985.20/x
  3. Step 3: Cross multiply
    357,455.60x = 535,924.20 × 146,985.20
  4. Step 4: Simplify right side
    357,455.60x = 78,772,925,721.84
  5. Step 5: Solve for x
    x = 78,772,925,721.84/357,455.60
  6. Step 6: Final answer
    x = 220,371.22

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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.