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Finding the Fourth Proportional to 562,116.12, 776,041.20 and 371,681.88

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Solution

The fourth proportional to 562,116.12, 776,041.20 and 371,681.88 is: 513,133.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,116.12 : 776,041.20 = 371,681.88 : x
  2. Step 2: Convert to fraction form
    562,116.12/776,041.20 = 371,681.88/x
  3. Step 3: Cross multiply
    562,116.12x = 776,041.20 × 371,681.88
  4. Step 4: Simplify right side
    562,116.12x = 288,440,452,173.46
  5. Step 5: Solve for x
    x = 288,440,452,173.46/562,116.12
  6. Step 6: Final answer
    x = 513,133.22

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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.