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Finding the Fourth Proportional to 530,429.10, 795,643.65 and 521,681.10

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Solution

The fourth proportional to 530,429.10, 795,643.65 and 521,681.10 is: 782,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,429.10 : 795,643.65 = 521,681.10 : x
  2. Step 2: Convert to fraction form
    530,429.10/795,643.65 = 521,681.10/x
  3. Step 3: Cross multiply
    530,429.10x = 795,643.65 × 521,681.10
  4. Step 4: Simplify right side
    530,429.10x = 415,072,254,540.02
  5. Step 5: Solve for x
    x = 415,072,254,540.02/530,429.10
  6. Step 6: Final answer
    x = 782,521.65

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Double scale
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Similar ratio
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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.