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Finding the Fourth Proportional to 559,788.48, 772,478.96 and 318,037.50

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Solution

The fourth proportional to 559,788.48, 772,478.96 and 318,037.50 is: 438,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,788.48 : 772,478.96 = 318,037.50 : x
  2. Step 2: Convert to fraction form
    559,788.48/772,478.96 = 318,037.50/x
  3. Step 3: Cross multiply
    559,788.48x = 772,478.96 × 318,037.50
  4. Step 4: Simplify right side
    559,788.48x = 245,677,275,650.81
  5. Step 5: Solve for x
    x = 245,677,275,650.81/559,788.48
  6. Step 6: Final answer
    x = 438,875.19

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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.