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Finding the Fourth Proportional to 607,328.80, 911,252.40 and 291,623.20

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Solution

The fourth proportional to 607,328.80, 911,252.40 and 291,623.20 is: 437,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,328.80 : 911,252.40 = 291,623.20 : x
  2. Step 2: Convert to fraction form
    607,328.80/911,252.40 = 291,623.20/x
  3. Step 3: Cross multiply
    607,328.80x = 911,252.40 × 291,623.20
  4. Step 4: Simplify right side
    607,328.80x = 265,742,340,895.68
  5. Step 5: Solve for x
    x = 265,742,340,895.68/607,328.80
  6. Step 6: Final answer
    x = 437,559.26

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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.