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Finding the Fourth Proportional to 99,762.20, 149,643.30 and 73,518.20

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Solution

The fourth proportional to 99,762.20, 149,643.30 and 73,518.20 is: 110,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,762.20 : 149,643.30 = 73,518.20 : x
  2. Step 2: Convert to fraction form
    99,762.20/149,643.30 = 73,518.20/x
  3. Step 3: Cross multiply
    99,762.20x = 149,643.30 × 73,518.20
  4. Step 4: Simplify right side
    99,762.20x = 11,001,506,058.06
  5. Step 5: Solve for x
    x = 11,001,506,058.06/99,762.20
  6. Step 6: Final answer
    x = 110,277.30

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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.