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Finding the Fourth Proportional to 615,916.40, 923,999.40 and 349,804.40

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Solution

The fourth proportional to 615,916.40, 923,999.40 and 349,804.40 is: 524,777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,916.40 : 923,999.40 = 349,804.40 : x
  2. Step 2: Convert to fraction form
    615,916.40/923,999.40 = 349,804.40/x
  3. Step 3: Cross multiply
    615,916.40x = 923,999.40 × 349,804.40
  4. Step 4: Simplify right side
    615,916.40x = 323,219,055,717.36
  5. Step 5: Solve for x
    x = 323,219,055,717.36/615,916.40
  6. Step 6: Final answer
    x = 524,777.48

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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.