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Finding the Fourth Proportional to 520,005.61, 717,599.01 and 290,566.63

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Solution

The fourth proportional to 520,005.61, 717,599.01 and 290,566.63 is: 400,977.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,005.61 : 717,599.01 = 290,566.63 : x
  2. Step 2: Convert to fraction form
    520,005.61/717,599.01 = 290,566.63/x
  3. Step 3: Cross multiply
    520,005.61x = 717,599.01 × 290,566.63
  4. Step 4: Simplify right side
    520,005.61x = 208,510,326,027.04
  5. Step 5: Solve for x
    x = 208,510,326,027.04/520,005.61
  6. Step 6: Final answer
    x = 400,977.07

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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.