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Finding the Fourth Proportional to 714,830.52, 986,472.95 and 392,547.36

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Solution

The fourth proportional to 714,830.52, 986,472.95 and 392,547.36 is: 541,719.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,830.52 : 986,472.95 = 392,547.36 : x
  2. Step 2: Convert to fraction form
    714,830.52/986,472.95 = 392,547.36/x
  3. Step 3: Cross multiply
    714,830.52x = 986,472.95 × 392,547.36
  4. Step 4: Simplify right side
    714,830.52x = 387,237,350,271.18
  5. Step 5: Solve for x
    x = 387,237,350,271.18/714,830.52
  6. Step 6: Final answer
    x = 541,719.11

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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.