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Finding the Fourth Proportional to 86,098.98, 118,848.82 and 64,650.68

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Solution

The fourth proportional to 86,098.98, 118,848.82 and 64,650.68 is: 89,242.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,098.98 : 118,848.82 = 64,650.68 : x
  2. Step 2: Convert to fraction form
    86,098.98/118,848.82 = 64,650.68/x
  3. Step 3: Cross multiply
    86,098.98x = 118,848.82 × 64,650.68
  4. Step 4: Simplify right side
    86,098.98x = 7,683,657,030.20
  5. Step 5: Solve for x
    x = 7,683,657,030.20/86,098.98
  6. Step 6: Final answer
    x = 89,242.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.