Home / 286,345.03-429,523.70-86,665.09

Finding the Fourth Proportional to 286,345.03, 429,523.70 and 86,665.09

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Solution

The fourth proportional to 286,345.03, 429,523.70 and 86,665.09 is: 129,999.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,345.03 : 429,523.70 = 86,665.09 : x
  2. Step 2: Convert to fraction form
    286,345.03/429,523.70 = 86,665.09/x
  3. Step 3: Cross multiply
    286,345.03x = 429,523.70 × 86,665.09
  4. Step 4: Simplify right side
    286,345.03x = 37,224,710,117.63
  5. Step 5: Solve for x
    x = 37,224,710,117.63/286,345.03
  6. Step 6: Final answer
    x = 129,999.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.