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Finding the Fourth Proportional to 692,085.80, 954,897.66 and 405,451.80

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Solution

The fourth proportional to 692,085.80, 954,897.66 and 405,451.80 is: 559,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,085.80 : 954,897.66 = 405,451.80 : x
  2. Step 2: Convert to fraction form
    692,085.80/954,897.66 = 405,451.80/x
  3. Step 3: Cross multiply
    692,085.80x = 954,897.66 × 405,451.80
  4. Step 4: Simplify right side
    692,085.80x = 387,164,975,062.79
  5. Step 5: Solve for x
    x = 387,164,975,062.79/692,085.80
  6. Step 6: Final answer
    x = 559,417.60

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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.