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Finding the Fourth Proportional to 401,178.69, 553,683.30 and 248,266.13

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Solution

The fourth proportional to 401,178.69, 553,683.30 and 248,266.13 is: 342,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,178.69 : 553,683.30 = 248,266.13 : x
  2. Step 2: Convert to fraction form
    401,178.69/553,683.30 = 248,266.13/x
  3. Step 3: Cross multiply
    401,178.69x = 553,683.30 × 248,266.13
  4. Step 4: Simplify right side
    401,178.69x = 137,460,808,348.92
  5. Step 5: Solve for x
    x = 137,460,808,348.92/401,178.69
  6. Step 6: Final answer
    x = 342,642.35

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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.