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Finding the Fourth Proportional to 372,953.40, 559,430.10 and 313,904.40

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Solution

The fourth proportional to 372,953.40, 559,430.10 and 313,904.40 is: 470,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,953.40 : 559,430.10 = 313,904.40 : x
  2. Step 2: Convert to fraction form
    372,953.40/559,430.10 = 313,904.40/x
  3. Step 3: Cross multiply
    372,953.40x = 559,430.10 × 313,904.40
  4. Step 4: Simplify right side
    372,953.40x = 175,607,569,882.44
  5. Step 5: Solve for x
    x = 175,607,569,882.44/372,953.40
  6. Step 6: Final answer
    x = 470,856.60

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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.