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Finding the Fourth Proportional to 630,710.22, 870,247.11 and 401,184.06

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Solution

The fourth proportional to 630,710.22, 870,247.11 and 401,184.06 is: 553,549.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,710.22 : 870,247.11 = 401,184.06 : x
  2. Step 2: Convert to fraction form
    630,710.22/870,247.11 = 401,184.06/x
  3. Step 3: Cross multiply
    630,710.22x = 870,247.11 × 401,184.06
  4. Step 4: Simplify right side
    630,710.22x = 349,129,268,793.07
  5. Step 5: Solve for x
    x = 349,129,268,793.07/630,710.22
  6. Step 6: Final answer
    x = 553,549.41

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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.