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Finding the Fourth Proportional to 223,688.58, 335,543.40 and 65,918.40

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Solution

The fourth proportional to 223,688.58, 335,543.40 and 65,918.40 is: 98,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,688.58 : 335,543.40 = 65,918.40 : x
  2. Step 2: Convert to fraction form
    223,688.58/335,543.40 = 65,918.40/x
  3. Step 3: Cross multiply
    223,688.58x = 335,543.40 × 65,918.40
  4. Step 4: Simplify right side
    223,688.58x = 22,118,484,058.56
  5. Step 5: Solve for x
    x = 22,118,484,058.56/223,688.58
  6. Step 6: Final answer
    x = 98,880.70

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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.