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Finding the Fourth Proportional to 623,438.51, 860,335.16 and 351,506.93

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Solution

The fourth proportional to 623,438.51, 860,335.16 and 351,506.93 is: 485,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,438.51 : 860,335.16 = 351,506.93 : x
  2. Step 2: Convert to fraction form
    623,438.51/860,335.16 = 351,506.93/x
  3. Step 3: Cross multiply
    623,438.51x = 860,335.16 × 351,506.93
  4. Step 4: Simplify right side
    623,438.51x = 302,413,764,803.45
  5. Step 5: Solve for x
    x = 302,413,764,803.45/623,438.51
  6. Step 6: Final answer
    x = 485,073.93

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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.