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Finding the Fourth Proportional to 525,779.70, 788,669.55 and 289,030.90

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Solution

The fourth proportional to 525,779.70, 788,669.55 and 289,030.90 is: 433,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,779.70 : 788,669.55 = 289,030.90 : x
  2. Step 2: Convert to fraction form
    525,779.70/788,669.55 = 289,030.90/x
  3. Step 3: Cross multiply
    525,779.70x = 788,669.55 × 289,030.90
  4. Step 4: Simplify right side
    525,779.70x = 227,949,869,839.10
  5. Step 5: Solve for x
    x = 227,949,869,839.10/525,779.70
  6. Step 6: Final answer
    x = 433,546.35

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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.