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Finding the Fourth Proportional to 318,802.60, 477,167.10 and 248,300.20

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Solution

The fourth proportional to 318,802.60, 477,167.10 and 248,300.20 is: 371,642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,802.60 : 477,167.10 = 248,300.20 : x
  2. Step 2: Convert to fraction form
    318,802.60/477,167.10 = 248,300.20/x
  3. Step 3: Cross multiply
    318,802.60x = 477,167.10 × 248,300.20
  4. Step 4: Simplify right side
    318,802.60x = 118,480,686,363.42
  5. Step 5: Solve for x
    x = 118,480,686,363.42/318,802.60
  6. Step 6: Final answer
    x = 371,642.79

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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.