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Finding the Fourth Proportional to 542,492.40, 748,487.61 and 316,094.16

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Solution

The fourth proportional to 542,492.40, 748,487.61 and 316,094.16 is: 436,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,492.40 : 748,487.61 = 316,094.16 : x
  2. Step 2: Convert to fraction form
    542,492.40/748,487.61 = 316,094.16/x
  3. Step 3: Cross multiply
    542,492.40x = 748,487.61 × 316,094.16
  4. Step 4: Simplify right side
    542,492.40x = 236,592,562,353.36
  5. Step 5: Solve for x
    x = 236,592,562,353.36/542,492.40
  6. Step 6: Final answer
    x = 436,121.43

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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.