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Finding the Fourth Proportional to 560,435.19, 773,417.63 and 318,752.55

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Solution

The fourth proportional to 560,435.19, 773,417.63 and 318,752.55 is: 439,888.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,435.19 : 773,417.63 = 318,752.55 : x
  2. Step 2: Convert to fraction form
    560,435.19/773,417.63 = 318,752.55/x
  3. Step 3: Cross multiply
    560,435.19x = 773,417.63 × 318,752.55
  4. Step 4: Simplify right side
    560,435.19x = 246,528,842,574.34
  5. Step 5: Solve for x
    x = 246,528,842,574.34/560,435.19
  6. Step 6: Final answer
    x = 439,888.23

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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.