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Finding the Fourth Proportional to 376,776.60, 520,088.40 and 249,493.20

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Solution

The fourth proportional to 376,776.60, 520,088.40 and 249,493.20 is: 344,391.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,776.60 : 520,088.40 = 249,493.20 : x
  2. Step 2: Convert to fraction form
    376,776.60/520,088.40 = 249,493.20/x
  3. Step 3: Cross multiply
    376,776.60x = 520,088.40 × 249,493.20
  4. Step 4: Simplify right side
    376,776.60x = 129,758,519,198.88
  5. Step 5: Solve for x
    x = 129,758,519,198.88/376,776.60
  6. Step 6: Final answer
    x = 344,391.13

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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.