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Finding the Fourth Proportional to 926,602.86, 1,390,803.12 and 447,168.08

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Solution

The fourth proportional to 926,602.86, 1,390,803.12 and 447,168.08 is: 671,185.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,602.86 : 1,390,803.12 = 447,168.08 : x
  2. Step 2: Convert to fraction form
    926,602.86/1,390,803.12 = 447,168.08/x
  3. Step 3: Cross multiply
    926,602.86x = 1,390,803.12 × 447,168.08
  4. Step 4: Simplify right side
    926,602.86x = 621,922,753,874.39
  5. Step 5: Solve for x
    x = 621,922,753,874.39/926,602.86
  6. Step 6: Final answer
    x = 671,185.88

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1.5x scale

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.