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Finding the Fourth Proportional to 188,545.98, 260,186.80 and 103,662.40

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Solution

The fourth proportional to 188,545.98, 260,186.80 and 103,662.40 is: 143,050.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,545.98 : 260,186.80 = 103,662.40 : x
  2. Step 2: Convert to fraction form
    188,545.98/260,186.80 = 103,662.40/x
  3. Step 3: Cross multiply
    188,545.98x = 260,186.80 × 103,662.40
  4. Step 4: Simplify right side
    188,545.98x = 26,971,588,136.32
  5. Step 5: Solve for x
    x = 26,971,588,136.32/188,545.98
  6. Step 6: Final answer
    x = 143,050.45

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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.