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Finding the Fourth Proportional to 501,661.35, 692,095.59 and 286,686.09

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Solution

The fourth proportional to 501,661.35, 692,095.59 and 286,686.09 is: 395,514.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,661.35 : 692,095.59 = 286,686.09 : x
  2. Step 2: Convert to fraction form
    501,661.35/692,095.59 = 286,686.09/x
  3. Step 3: Cross multiply
    501,661.35x = 692,095.59 × 286,686.09
  4. Step 4: Simplify right side
    501,661.35x = 198,414,178,603.34
  5. Step 5: Solve for x
    x = 198,414,178,603.34/501,661.35
  6. Step 6: Final answer
    x = 395,514.18

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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.