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Finding the Fourth Proportional to 692,665, 955,868.65 and 386,746.59

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Solution

The fourth proportional to 692,665, 955,868.65 and 386,746.59 is: 533,705.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,665 : 955,868.65 = 386,746.59 : x
  2. Step 2: Convert to fraction form
    692,665/955,868.65 = 386,746.59/x
  3. Step 3: Cross multiply
    692,665x = 955,868.65 × 386,746.59
  4. Step 4: Simplify right side
    692,665x = 369,678,940,875.40
  5. Step 5: Solve for x
    x = 369,678,940,875.40/692,665
  6. Step 6: Final answer
    x = 533,705.24

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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.