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Finding the Fourth Proportional to 623,700.78, 860,928.39 and 369,051.42

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Solution

The fourth proportional to 623,700.78, 860,928.39 and 369,051.42 is: 509,421.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,700.78 : 860,928.39 = 369,051.42 : x
  2. Step 2: Convert to fraction form
    623,700.78/860,928.39 = 369,051.42/x
  3. Step 3: Cross multiply
    623,700.78x = 860,928.39 × 369,051.42
  4. Step 4: Simplify right side
    623,700.78x = 317,726,844,847.81
  5. Step 5: Solve for x
    x = 317,726,844,847.81/623,700.78
  6. Step 6: Final answer
    x = 509,421.91

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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.