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Finding the Fourth Proportional to 54,328.30, 81,492.45 and 47,038.30

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Solution

The fourth proportional to 54,328.30, 81,492.45 and 47,038.30 is: 70,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,328.30 : 81,492.45 = 47,038.30 : x
  2. Step 2: Convert to fraction form
    54,328.30/81,492.45 = 47,038.30/x
  3. Step 3: Cross multiply
    54,328.30x = 81,492.45 × 47,038.30
  4. Step 4: Simplify right side
    54,328.30x = 3,833,266,310.84
  5. Step 5: Solve for x
    x = 3,833,266,310.84/54,328.30
  6. Step 6: Final answer
    x = 70,557.45

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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.