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Finding the Fourth Proportional to 98,666.98, 136,069.57 and 64,663.08

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Solution

The fourth proportional to 98,666.98, 136,069.57 and 64,663.08 is: 89,175.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,666.98 : 136,069.57 = 64,663.08 : x
  2. Step 2: Convert to fraction form
    98,666.98/136,069.57 = 64,663.08/x
  3. Step 3: Cross multiply
    98,666.98x = 136,069.57 × 64,663.08
  4. Step 4: Simplify right side
    98,666.98x = 8,798,677,490.48
  5. Step 5: Solve for x
    x = 8,798,677,490.48/98,666.98
  6. Step 6: Final answer
    x = 89,175.50

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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.