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Finding the Fourth Proportional to 280,000.08, 386,401.86 and 152,677.80

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Solution

The fourth proportional to 280,000.08, 386,401.86 and 152,677.80 is: 210,696.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,000.08 : 386,401.86 = 152,677.80 : x
  2. Step 2: Convert to fraction form
    280,000.08/386,401.86 = 152,677.80/x
  3. Step 3: Cross multiply
    280,000.08x = 386,401.86 × 152,677.80
  4. Step 4: Simplify right side
    280,000.08x = 58,994,985,900.71
  5. Step 5: Solve for x
    x = 58,994,985,900.71/280,000.08
  6. Step 6: Final answer
    x = 210,696.32

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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.