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Finding the Fourth Proportional to 536,973.39, 805,417.95 and 312,190.50

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Solution

The fourth proportional to 536,973.39, 805,417.95 and 312,190.50 is: 468,261.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,973.39 : 805,417.95 = 312,190.50 : x
  2. Step 2: Convert to fraction form
    536,973.39/805,417.95 = 312,190.50/x
  3. Step 3: Cross multiply
    536,973.39x = 805,417.95 × 312,190.50
  4. Step 4: Simplify right side
    536,973.39x = 251,443,832,519.48
  5. Step 5: Solve for x
    x = 251,443,832,519.48/536,973.39
  6. Step 6: Final answer
    x = 468,261.25

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Similar ratio
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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.