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Finding the Fourth Proportional to 692,862.48, 956,131.68 and 386,930.40

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Solution

The fourth proportional to 692,862.48, 956,131.68 and 386,930.40 is: 533,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,862.48 : 956,131.68 = 386,930.40 : x
  2. Step 2: Convert to fraction form
    692,862.48/956,131.68 = 386,930.40/x
  3. Step 3: Cross multiply
    692,862.48x = 956,131.68 × 386,930.40
  4. Step 4: Simplify right side
    692,862.48x = 369,956,413,395.07
  5. Step 5: Solve for x
    x = 369,956,413,395.07/692,862.48
  6. Step 6: Final answer
    x = 533,953.60

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1.5x scale

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.