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Finding the Fourth Proportional to 879,472.16, 1,213,692.14 and 492,277.95

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Solution

The fourth proportional to 879,472.16, 1,213,692.14 and 492,277.95 is: 679,355.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,472.16 : 1,213,692.14 = 492,277.95 : x
  2. Step 2: Convert to fraction form
    879,472.16/1,213,692.14 = 492,277.95/x
  3. Step 3: Cross multiply
    879,472.16x = 1,213,692.14 × 492,277.95
  4. Step 4: Simplify right side
    879,472.16x = 597,473,880,577.96
  5. Step 5: Solve for x
    x = 597,473,880,577.96/879,472.16
  6. Step 6: Final answer
    x = 679,355.08

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Double scale
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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.