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Finding the Fourth Proportional to 346,647.40, 520,068.30 and 147,063.40

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Solution

The fourth proportional to 346,647.40, 520,068.30 and 147,063.40 is: 220,636.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,647.40 : 520,068.30 = 147,063.40 : x
  2. Step 2: Convert to fraction form
    346,647.40/520,068.30 = 147,063.40/x
  3. Step 3: Cross multiply
    346,647.40x = 520,068.30 × 147,063.40
  4. Step 4: Simplify right side
    346,647.40x = 76,483,012,430.22
  5. Step 5: Solve for x
    x = 76,483,012,430.22/346,647.40
  6. Step 6: Final answer
    x = 220,636.34

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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.