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Finding the Fourth Proportional to 693,779.52, 957,434.40 and 391,967.04

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Solution

The fourth proportional to 693,779.52, 957,434.40 and 391,967.04 is: 540,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,779.52 : 957,434.40 = 391,967.04 : x
  2. Step 2: Convert to fraction form
    693,779.52/957,434.40 = 391,967.04/x
  3. Step 3: Cross multiply
    693,779.52x = 957,434.40 × 391,967.04
  4. Step 4: Simplify right side
    693,779.52x = 375,282,727,762.18
  5. Step 5: Solve for x
    x = 375,282,727,762.18/693,779.52
  6. Step 6: Final answer
    x = 540,925.06

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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.