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Finding the Fourth Proportional to 145,305.16, 218,041.98 and 61,058.68

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Solution

The fourth proportional to 145,305.16, 218,041.98 and 61,058.68 is: 91,623.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,305.16 : 218,041.98 = 61,058.68 : x
  2. Step 2: Convert to fraction form
    145,305.16/218,041.98 = 61,058.68/x
  3. Step 3: Cross multiply
    145,305.16x = 218,041.98 × 61,058.68
  4. Step 4: Simplify right side
    145,305.16x = 13,313,355,483.39
  5. Step 5: Solve for x
    x = 13,313,355,483.39/145,305.16
  6. Step 6: Final answer
    x = 91,623.42

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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.