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Finding the Fourth Proportional to 712,566.60, 983,357.79 and 406,636.89

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Solution

The fourth proportional to 712,566.60, 983,357.79 and 406,636.89 is: 561,167.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,566.60 : 983,357.79 = 406,636.89 : x
  2. Step 2: Convert to fraction form
    712,566.60/983,357.79 = 406,636.89/x
  3. Step 3: Cross multiply
    712,566.60x = 983,357.79 × 406,636.89
  4. Step 4: Simplify right side
    712,566.60x = 399,869,553,482.87
  5. Step 5: Solve for x
    x = 399,869,553,482.87/712,566.60
  6. Step 6: Final answer
    x = 561,167.97

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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.