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Finding the Fourth Proportional to 875,681.40, 1,208,437.74 and 473,273.40

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Solution

The fourth proportional to 875,681.40, 1,208,437.74 and 473,273.40 is: 653,115.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,681.40 : 1,208,437.74 = 473,273.40 : x
  2. Step 2: Convert to fraction form
    875,681.40/1,208,437.74 = 473,273.40/x
  3. Step 3: Cross multiply
    875,681.40x = 1,208,437.74 × 473,273.40
  4. Step 4: Simplify right side
    875,681.40x = 571,921,437,898.12
  5. Step 5: Solve for x
    x = 571,921,437,898.12/875,681.40
  6. Step 6: Final answer
    x = 653,115.89

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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.