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Finding the Fourth Proportional to 559,823.16, 772,528.02 and 318,073.80

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Solution

The fourth proportional to 559,823.16, 772,528.02 and 318,073.80 is: 438,925.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,823.16 : 772,528.02 = 318,073.80 : x
  2. Step 2: Convert to fraction form
    559,823.16/772,528.02 = 318,073.80/x
  3. Step 3: Cross multiply
    559,823.16x = 772,528.02 × 318,073.80
  4. Step 4: Simplify right side
    559,823.16x = 245,720,922,927.88
  5. Step 5: Solve for x
    x = 245,720,922,927.88/559,823.16
  6. Step 6: Final answer
    x = 438,925.97

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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.